Just because you use 90% of the pruned spells that you have now, doesn't mean you have more spells. I can see if you meant that your abilities are more meaningful now. But we have less abilities than before. Out of the classes I play in pvp(Priest, Warlock, Rdruid, Rogue, mwMonk) I used almost every ability in the toolkit every expac. How you seem to think we only used 50% of the abilities in WoD confuses me.
Warlocks...can have 4 dps buttons to press. They can put their entire toolkit on one god damn bar. Thats just one class, we can go into multiple others that have been gutted out quite a bit. I would have to find the blues post/interview but blizz stated they wanted to reduce everyone to less than 20 buttons.
What character-defining decisions would that be? I don't see how.. putting an AoE heal with 12 second CD iconic ability that we have had forever, in the same row as a Major 3 minute CD that boosts healing of our most powerful spells by 200% and reduces their CD greatly, something we should have to pick from. It makes no sense to me. I get the whole decision making, but in my opinion they could have made what we had to chose from better or at least make sense.
I could understand a little more if they made Divine hym on the level 100 talent row instead of CoH. That would feel like a great character defining decision, major AoE healing vs Major single target healing.
Maybe I'm overly critical of it, I am enjoying the game overall though regardless of how I feel about talent trees and pruning.