doctorbadwolf
Heretic of The Seventh Circle
I have found that if you use the Feywild stuff mostly as is, but make Feywild and Shadowfell each a type of wilderness one can stumble into, sometimes overlapping, it works a lot better. Although, Tyr Na Nog then loses any analogue unless you also have a separate Otherworld.To me Midgard is the world that most makes sense for the kind of D&D that 5E is.
5E is too high magic for a sword and sorcery feel and has too many non human races to fit the high fantasy tolkienish feel of Forgotten Realms (especially if you're using the additional races). Also latter day additions such as the feywild have just never felt right to me.
The dark fairy tale tone of Midgard is I think the best fit for 5E. It may not really be what I want D&D to be, but it probably fits best with what D&D is.