There seems to be a lot of misconceptions in this thread.
1) You don't need that much power to finish the game. The major expense of using power is opening up areas, most of which are optional. I'm not even remotely full clearing areas and I'm desperately looking for things to spend power on. I get it far faster than I can spend it.
2) Its extremely easy to out level content in this game if you are even close to a "clear the zone before moving on" sort of player. I'm lvl 17 and I have all kinds of lower level content (mostly in the 12-14 range) that I haven't done.
3) Fast travel using the camps and towns makes most zones pretty small. If you really hate exploring, get the Perk that makes Harding do more work and reveal more of the map.
4) Grinding for resources is not necessary. The merchant in Crossroads sells as much of the common stuff like Elfroot as you could want. Your war table people can be sent to get whatever items you are looking for. Perks let you get stashes of regular and rare stuff.
It seems to me that most of the complaints are coming from players who have only experienced the Hinterlands. That's not unreasonable, since there's no guidance that Val Royeux is only lvl 4 and opens up a lot more of the world. Players are used to thinking of zones as uniform in difficulty and something that should be cleared before you go on. If you clear the HInterlands before following the story missions, you'll be over level most likely.
I much prefer this type of game over DA:O. This game is much bigger. I never want to see another Brecilian Forest or Deep Roads corridor map again. The "walk by conversation" system in the open areas is actually pretty cool, but its too easy to end up talking from a bizarre angle. That could definitely be improved on, but I don't know that a full cutscene would really help all that much relative to the costs in reduced content it would bring.
I love the game. Its not flawless, but its definitely the best of the three in my opinion.