The mods (especially GS) highlighted existing design flaws in WoW. In GS's case the flaw was that a game which dumbed itself down enough to allow PUG raiding to become the norm had lost its sense of direction. The fact that the designers did nothing to correct this was the game's problem, not the mod's problem, nor the problem of those using it. Also, mods don't corrupt people. Douches will be douches regardless of whether or not they have a mod giving them an excuse for it. If you want to eliminate the possibility of encountering douches, play Skyrim, KOTOR, or any of the other excellent single player RPGS. If you play a popular MMO, you are going to end up dealing with a few regardless of what design decisions are made. Anticipating and accepting that will make you a happier person.

So... because you don't want something, that makes it bad for the game? As near as I can tell the crowd screaming for no damage meters has conflated personal opinion and truth. Regardless of whether or not you'd use a damage meter, there are players who would. Eventually Bioware's business sense will kick in and they will give the customers what they want. The other option is that they will ignore their customers and the subscription will numbers eventually dwindle to levels that render the type of updating and support you crave unsustainable. If it were me, I'd root for a responsive management of the game even if it meant addition of functionality I don't want or plan on using. But hey, if trolling people who disagree with you is better for you guys... have fun with that.