Raid finder is necessary it was added for the specific purpose of increasing success rates. before raid finder was added it was impossible to get clears in thordan / seph or nidhogg ex. success rates were incredibly low. which is a big part of why the raid finder was added.
after the raid finder was added success clears of content went up a lot. many people farmed a lot of primal stuff from Sophia in raid finder... I even got my first zurvan clear in raid finder and nidhog as I said earlier.
I know quite a few people that cleared the whole of creator savage using raid finder cos they had no time for statics or anything was just queue and go...
if you aboilish the raid finder and add that indicator to the duty finder that says someone in your party hasn't cleared this. are you going to give people the option to withdraw from that duty without penalty if that indicator comes up.. maybe they joined to farm a couple of quick wins or are you going to basically hold them to ransom and force them to help you learn or eat a 30 minute penalty... (what happened to there time being as important as yours?)
the raid finder does not exclude anyone from content. it's addition was designed to make content more accessible than ever. (no time for a static to learn that fight hit raid finder and go) cleared that fight but no time to commit to a static to farm it. (hit raid finder and go)
it was designed to help players find parties that matched there abilities... if practice parties take longer to fill than farm parties that doesn't mean the farmers should have to help you out.
the people using party finder should be the people learning.. then you can create or join parties more fitting to your progress. have you seen broken seal or maybe even enrage.. then join a p3 learning / clear party..
first time join a p1 learning..
if you've seen enrage and looking to clear and then duty finder keeps putting you with people who can't even survive the first soar time and time again I'd bet you'd soon be getting just as frustrated as farmers get when a bonus tries to sneak in. because all you wanna do is finally get a win but every group you get can't even get close to your goal. how long does it take for your time to feel wasted?