This is still just a rumour...
I like the trade both ways to some degree, more for Denver, and less for Boston. Boston really get's young, and I mean young. They don't really need to rebuild, but it seems like Pierce has been disgruntled, and I think this is the way you handle it when it happens except for the fact that you expect more for Pierce.
Nene and Al Jefferson in the frontcourt

, that's going to be beastly. I've always been a big fan of Nene, so I like that he'll get to start again. If it happens, I think this is the big thing, b/c Nene can be very good, and was already pretty good before.
Andre Miller makes them more stable at PG, I think, since Marcus Banks is still iffy, and Delonte West isn't a real PG, but if it's a youth movement, they don't need a PG especially since they also signed Dickau, Boston does get worse as a team, but their's positives, mainly getting Nene, outside of that, it's kinda stupid lol.
For Denver, well, they just gave themselves a little nudge in the West with this happening. They now have 2 "stars", a nice starting lineup, and decent depth. They need another big though, all they have right now is Elson.