Did 4e get a game? It seems made for it and I was looking forward to one but I don't recall anything other than neverwinter. I'd have wanted something a little more tactical like neverwinter nights 2 but with the 4e ruleset. I reckon that would have been sweet.
Masses of crunch really is not necessary - I'd argue that it would put more casual gamers off, and there's probably a much bigger market among casual players than there is with us gaming-obsessives here!
Again I disagree, I found the excessive mechanics in Pillars somewhat off-putting, and Neverwinter Nights put me off ever wanting to play 3/3.5E at the gaming table.
The best D&D games have been the Baldur's Gate series - by a country mile.
I respect your disagreement. I just reaaaallly don't think the 5e table experience would translate to a satisfying single player experience. I think WotC put a lot of effort into making this edition the best one to play face to face with people and don't see how it would track outside of that setting.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.