If those things were an improvement ... I don't think it is, if the actual game makes no use of those non-combat skills. And not alibi-uses like the pick-pocket-skill.
But maybe some people are too focused on numbers that make up their char? For me at least, I make the char up in my mind, make him/her as strong as I see fit, and without the needs for numbers for that...
So you answer to a plead about making non-combat skill relevant by "it's no use if they are not relevant".
Wow, missing the point much ?
And it's nice you can play make-believe in your head about how your character is. But I thought the very point of a computer RPG was precisely to be able to give life to such character. If their supposed abilities are in no way reflected in the game, then all your imaginary session is completely pointless.
I wouldn't say those games were successful. We don't know if they were more succesful than ToEE and IWD which is what they mimic, not BG2 or PS:T which they have 0 in common with actually.
Wasteland 2 has little to do with ToEE and IWD, and a lot to do with Fallout. Pillar of Eternity looks much closer to PS:T than ToEE or IWD too (though we'll have to wait until it's released, but I'm rather pretty certain about it).
Also, consider the difference in budget and marketing : they are all under 5 millions bucks. That's order of magnitude below what an AAA cost, and they don't have to content a greedy publisher. I'd say that, relatively speaking, they are probably actually MORE successful than lots of AAA games - they certainly are more than DA2, to say the least.