Well that's the idea of the Game isn't it. You wipe for a reason and then you learn yourself or someone tells you the mistake you make. And you fix it.
Where if you don't want to learn you get kicked unlike the curent 25 mechanics where it will neither be someone to see your mistake or tell you about it. And in the small ocasions you get kicked for it it will be after too many wipes already.
If it's a wipe free enviroment. Make it an ingame cut scene and after you watch it get the gear in your mailbox.
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Like you said the problem is not the system it's the players.
But those players in 25 man get away with it. AFK in the shadows and never learn.
In order to teach those ppl you need to change something and in my opinion it's the amount of ppl
.......... Big groups let individuals get out of the spot light much easier .......
Make LFR 10 man and problems will shine and ppl will react to them and fix them.
In the long term it will fix the Queue times where right now they are only slowly becoming longer and longer