I think both the ability to remove the skill system and the advice about Points of Light settings in the
DMG mean
4E can be played closer to actual D&D. But you're still going to have that awful combat system to account for and the division of magic spells from actual combat. Of course the latter is an easy enough fix by shortening casting times to 1 action vs. 10 minutes. Plus, I can't for the life of me figure out why they kept Feats. But they're pretty integrated as well (very hard to remove). I bet there are other ways to fix the game, but I haven't really taken a look at it from that angle. It's just too much work for a very low payoff
IMO.