Originally Posted by
Valenthiel
You're fighting the only way to make a heroic 25 person group work. That is removing all feelings of sympathy and embracing meritocracy. Unless you want to build yourself up to kicking people routinely (It will never stabilize, it's part of the deal) and constantly poaching/otherwise doing whatever you can to acquire additional players, 25 heroics are not for you. From what you're describing, your entire attitude needs to change for you to effectively run a 25 group, and that's not necessarily a good thing.
All bullshit and misplaced machismo aside (I do 199k dps, so suddenly I'm not a nerd, I'm a fucking hardcore badass... right?) in these situations you need to figure out what you're comfortable with and what your goals are. It doesn't sound like you want the hire/fire heavy job of running a 25 group capable of heroic progression, and if you don't want it, don't do it. If you want to do heroics and have a group within your guild capable, switch to 10s. If you don't care, then stop stressing and resign yourself to very limited progression with your 25. Just figure out what you want.
Unless you're on the top of your server, and your server has a strong raid community, it's pretty rough trying to maintain a heroic capable 25 group. You'll have a very, very long process of establishing yourself. You'll need to put up with a lot of people you don't like, because they happen to perform their role well. All that sort of stuff. It doesn't SOUND like you want to do that, so don't. You're just going to burn yourself out and quit if you stay on this road.
It sounds like you'd be happier with 10s. That probably means most of your core people would too, unless you're just the odd-man-out. If you are, than you can quit, knowing that the group just went somewhere you weren't having fun. A good rule for leadership is: If you feel something very strongly in the context of your group, positive or negative, other people feel it too.
Edit: I thought it was worth adding, it sounds like the power structure of your guild would need to be altered as well, which was part of why I gave a "Just Stop" response, but I felt it was worth mentioning explicitly. Everyone would need to be on board and ready to enforce a new general approach, that's not easy.