I won't be too quick with judging that system. At least in Diablo 3 it works very well I think. The thing is, it is counterintuitive and contradicts some fundamentals of roleplaying, but it actually makes a lot of sense for the player. It allows to change your character throughout a playthrough, to try out different playstyles without having to start a new game. And that's great.
Most players won't play through a game many times to try different things, they will play it once, if that. So if you make distributing skill points a lasting thing, a player is stuck with, in the best case, a single flavor of playing a class, or, in the worst case, a useless character because he didn't know what he was doing. Both not particularly desirable things.
But on the other hand, the reason why I like it so much in D3 is because it's an endless game. The game's core mechanic is to make your character more powerful. And doing that not only by levelling up and finding better gear, but adding experimentation to find a good skillset for your personal playstyle to the mix and by making players think about questions like "Do I want this really powerful item which will only work to its fullest potential if I change my skills, or do I stick with my old item and skillset because I like it better?", that system is actually reinforcing the core mechanic of the game.
Dragon Age is not like that. It's a finite experience. It has an ending. And it's more about your character interacting with the world than about optimizing your character. So, in this case, by taking away from the character's definite properties, they actually remove an anchor for roleplaying. It seems like they work against the core mechanic. But then again, it's not really about roleplaying anyway, but about getting better at combat and dating an NPC, so they might as well do something to promote character optimization.
I'm really on the fence about that feature. It's good for the action game-y stuff they do recently, it's bad for roleplaying. It might make DA:I a better game, but it will make it a worse roleplaying game - in which regard I didn't expect any steps forward anyway.