I have to admit I don't get your point. It's like saying "wow, in ME3 there's still biotic/tech/soldier powers from previous games. I mean, why do we still have pull, overload or inferno ammo? Isn't it time for something new?"
They're iconic, part of the world. It helps make the world cohesive through gameplay too. Some are pissed that you can't heal in combat (I find it fine myself. Focusing on preventing from being damaged instead of healing damage seems like a smart choice, and there are healing spells. But they are also reviving spells. Makes sense to me).
I'm playing a two handed warrior and loving it, though combat roll and my experience with dark souls makes dodging easy. I went for more dps and only just got warcry to build some guard, most of the time I can dodge most attacks, which is great. With roll and parry I can even mimick my fencing style which was entirely impossible in previous games.
I'd say you have to play the game more, there are a lot of old abilities, but everything has been overhauled, it's just more fun to play, now they just need to get the tactics part back to how it used to be.