In my opinion they eliminated pretty much all the depth in character developement, it feels so casual and shallow, you don't need to play the full game to have seen everything.
Skills have become pretty static, because you don't need to invest a lot to learn higher skills. So you will get pretty early your final skill setup and combats become a routine of specific skills in specific orders.
Armour and attribute system have killed the biggest selling point from first game, being able to mix every skilltree with each other as much as you wish.
Leveling attributes got pretty pointless and warfare gives you better physical damage turnout overall than your scoundrel or hunter skills would. And summoner ist the only skill tree that rewards you with something special for maxing it.
They took away secondary effect stuff like AP cost reductions, increased AP generation and cooldown reductions but had no idea of how to replace those side benefits. So most skills and attributes now do only one shallow job: increasing your damage. Nothing do be creative about or make a distinctive different character setup like in the first game.
Not to mention that physical is overall superior to magical: damage influenced by weapons, no resistances/immunities so different weapon types don't matter anymore, CC does not need two layers, inventory size, warfare goes for everything.
