In the same thread as Nik's post, Xundau addresses some concerns about being able to accomplish quests without brute-forcing your way through with sword and spell.
That being said, the key question as I see it is, with all of this talk of "12-20 encounters per rest opportunity," how many of these encounters will have a non-combat solution?
The answer, I think, is many encounters, but by no means all. Or even most. But combat is an essential part of D&D, and it will be an essential part of DDO as well. Yes, I know it's possible to run a pacifist campaign in D&D. But just like a PvP campaign, this is an advanced option, not the norm for D&D.
He goes on to elaborate what some of the options may be and how they could be accomplished, citing Baldur's Gate as an example. You can find his post right here.
