Please re-consider vote kick.

[Fyrebrand]

I fail to see why those who are kicked out can queue again right after being dismissed and are not punished in any sort of way

Uh... you know people abuse the kick system, or get kicked for bad reasons, right? If some jerks kicked you on a whim, or because you weren't "good enough" for them, or to bring in some guildie at the last minute, or just to troll for the heck of it, do you think you should be locked out of Duty Finder afterwards?

If the person joined after being kicked, you could likely report them for harassment.

But it's in DF, so it's not like you get to know beforehand who you are joining...

[BreathlessTao]

Uh... you know people abuse the kick system, or get kicked for bad reasons, right? If some jerks kicked you on a whim, or because you weren't "good enough" for them, or to bring in some guildie at the last minute, or just to troll for the heck of it, do you think you should be locked out of Duty Finder afterwards?

Do I think I should be locked out? No. Would I put up with it if that meant that those vote-kicked for all the right reasons can't just return to the same party that voted them off in shorter time than the blink of an eye? Yes, yes, yes and a thousand times yes.

For the record, it just happened today again - kicked guy returned right after he was kicked. Completely defeats the purpose of having the whole system in the first place, might as well just get rid of it.

[Whiston]

Do I think I should be locked out? No. Would

For the record, it just happened today again

I would submit that instead of suggesting they rework this function, you instead assess your tolerance levels and gameplay.

In this thread, you have stated that 3 times in the previous two weeks you've encountered the problem where you've vote kicked a player and they've returned to the dungeon.
How many vote kicks have you not mentioned?

I haven't used the vote kick feature in weeks to months. I have possibly used it 3 times since it's implementation.
You, on the other hand, have claimed to have vote dismissed a player in an instance 3 times in as many weeks! (That you have detailed here)

I would suggest it is far more useful for SE to track and possibly regulate the vote kick function to prevent possible abuse of the system as opposed to punish those who have been potentially dismissed for invalid reasons.

[Fyrebrand]

I would submit that instead of suggesting they rework this function, you instead assess your tolerance levels and gameplay.

In this thread, you have stated that 3 times in the previous two weeks you've encountered the problem where you've vote kicked a player and they've returned to the dungeon.
How many vote kicks have you not mentioned?

Good point. You know, I am beginning to notice a trend here. I am seriously questioning if OP is telling the whole story...

Just had a very obnoxious "healer" (quotes, because she seemed to be thinking she was tank) in the duty roulette. It came to the point where she was voted to be kicked - twice. And after both, she popped right back in (not only with a condescending and downright rude tone to boot, but even refusing to do any sort of healing for the rest of the dungeon), effectively rendering the vote dismiss function useless.

What does that mean, "seemed to be thinking she was tank"? Was she consistently running ahead of the group and pulling mobs? As a healer myself, I know that kind of behaviour is pointless and would just end up getting me killed.
It seems possible that her heals were pulling aggro, which could be an indication of an undergeared/unskilled tank, or that she was healing way more than necessary. Or maybe she was casting Regen or Stoneskin while mobs were in range, pulling them to her before the tank could gain enmity.
Whatever the case, all you say is "it came to the point where she was voted to be kicked," without any explanation how it came to that point. Did you not try to address the problem behaviour and talk about changing tactics? Or did you just dislike what the player was doing, and kick her without hesitation? Her being rude and refusing to heal upon return was of course not the correct thing to do, but not a surprising reaction if she perceived that she had been kicked for no good reason, or that her heals were going to keep pulling aggro from your current tank.

it just happened to me again today. Guy sat down and went literally "it's either you kick me or I afk while you get me the exp". He refused to just quit on his own, and all three of us refused to use the vote dismiss as his personal get-out-of-lockout-for-free feature (whoever initiates one that gets through, can't do again for four hours, mind you), since nobody initiated a vote; all three of us also refused to go on, just sitting down next to him and staring at him. While an apparent agreement on our side, this kind of behaviour on his part is just not tolerable.

No attempt to explain the situation, I see. So am I supposed to assume that this guy did this as soon as he entered the dungeon, unprovoked? Or is there more to the story? I notice you didn't even mention this was a player who had returned to your party after being kicked -- in fact, you mention refusing to kick him, so I don't see how you can say it "happened to me again." The only thing I can see for sure that happened again, was a destructive group experience involving you.
Also, you say all three of you refusing to progress was "an apparent agreement." Do you mean "apparent" as in, that's what you assumed, but didn't actually discuss it or agree on it? Because if one guy says he's just going to sit there, and then you just sink to his level and do the same, the other two players in the party don't have much choice. It's not like they can try to complete the dungeon on their own. They are probably just hoping you guys will grow up and quit this nonsense.
My advice is to just take the high road next time, and instead of mimicking the trollish behaviour that you claim not to like, just kick the player. If he winds up coming back, that's unfortunate, but I don't think it is as common as you are making it out to be. You really seem to be way too focused on fighting fire with fire and getting "revenge" on people, even when it means potentially penalizing innocent people and wasting more time by mirroring immature behaviour.

For the record, it just happened today again - kicked guy returned right after he was kicked.

You sure do kick a lot of people. I see you've completely given up on any kind of story that shows such kicks were justified or necessary. Please keep in mind that vote-to-kick is an important tool in removing problem individuals, but it is intended as a last resort. It is much, much better for everyone if you avoid hostility and talk things out politely and patiently with your teammates. While I agree that it serves no purpose for someone who has been kicked from a group to be allowed to re-join that group through DF, I really am doubting your motivations for kicking these players in the first place.