Please DO NOT add a boot / kick feature.
Heres why:
How many times have I ran into mean people in dungeons that would kick you for petty reasons? 100% of the time.
How many times have I came across afk'rs or bad mouthed people? 1% of the time.
If you add a kick feature it will be used to remove people who are undergeared and have every right to be in the party so they can progress to end game.
I am fortunate enough to have full top gear, so I did a test once, and I found people accepted me 99% of the time with my full top end gear on while when I used my AK or regular gear, people were mean to me 50% of the time, and would have kicked me for simple mistakes that I made during runs.
So I ask you this: Is it better to be kicked 50% of the time for things you cannot change, or is it better to experence afk people only 1% of the time you run dungeons?
One of the main reasons I love this game is that mean people cannot kick me for my mistakes or lack of gear.