For me my main gripe with the game is that it isn't the Legend of Mir it's more Legend of Wizards. Take leveling for example. 2 wizards together can level at an astronomical rate and apart from pity on their fellow gamer they have no reason to take a Warrior or a Taoist with them. I'm not saying it should be on equal footing but I find it ridiculous that as a Tao if I want to chill out and go on a solo hunt I'm confined to somewhere a level 30 wizard can solo just as well.
My main nuke I gained at level 18 and has been my main form of attack since then. My pets even at level 7 are sub-par and usually get TUed by a wizard by the time I get to the place I want to hunt anyway. On top of all of that to perform my main nuke that does crap damage anyway I have to carry around stacks and stacks of Amulets which as far as I can see are tedious and completely unnecessary.
Wizards aren't glass cannons, they have a shield that makes them take next to 0 damage, they have insanely over powered pets that when you have 5 of them and leveled can solo bosses on their own with little to no assistance, they have a spell that can 1 shot undead mobs and to top it all off when you combine 2 of them together you can kill hoards and hoards of mobs with ease. This is before you even get to the fact that they have super powerful single target nukes.
I find Mir extremely fun and I have played loads of MMOs since I first played this game. People need to stop living in the past and by these strict guidelines that Taoist should never be allowed to do any damage and the only thing Warriors are good for is carrying pots while we all watch Wizards kill stuff. Some of the fat needs to be trimmed and I think it could definitely be balanced a lot better in certain areas.