LOL really now. Ok so I show up as a drg to a delve boss run and say I don't have angon because I want to be as special snow flake how fast do you think the group would kick me. If you want to do group content you have to submit to what the group needs and wants. While yes it is a player issue it is also SE's issue to fix it, and changing the game is a whole lot easier then trying to change people.There is no harm AT ALL in uncapping the system. As so many people have pointed out there has always only been one right way to spend job merits if you wanted to do content on that job.
As the player base gets smaller people will remember the little snow flakes and not invite them, so those people too will relent and give up their crap merits to be useful. Also they have been upping the caps on the ones that used to really limit what jobs you can max out before the merited weapon skills were added. Combat, HP/MP, magic skills, attributes even the other cat have gotten increases that now limit you very little.