First off let me say that I hate the name of the next edition of D&D. It really makes you wonder what the next next edition of D&D will be called. It also gives one the sense, and not in a good way, that this is probably the last "official" version of D&D. Maybe they should just call it D&D Last.
One of the critiques of D&D Next that I have heard from many sources is its apparent lack of direction. It is pretty obviously a stripped down version of 3e with a couple of new ideas sprinkled in. To me, that is a direction. D&D Last would actually be an appropriate name because it is definitely a step back down the family tree away from 4e and closer to the roots of the game. It is closer to the last edition than the next. But in my opinion that is a good thing. I think a stripped down version of 3e with most of the skill system thrown out is not a bad edition of D&D. I will reserve final judgement until I see how complexity is added. If WOTC succeeds in giving options to the gamers that want to create really complex (mechanically) characters and still keeps the basic game this stripped down and light feeling, I personally will love it.