Did somebody say [Thunderfury, Blessed Blade of the Windseeker]?
I actually really enjoy Neverwinter (the MMO), but you do need to take a step back and acknowledge that it is trying to capture the feel of D&D without actually using any of the mechanics. It was based on D&D4 and even then the rules translation was pretty loose.
Also you need to not get caught up in the lockbox economy. The occasional store purchase is not the end of the world, considering that the game is free otherwise, but if you get sucked into the Pokémonesque companion and mount collecting all is lost.
As for Planescape being the default setting, I'm not sure I agree. I own all of AD&D2 Planescape, and was really into it once upon a time -- the "core cosmology" of D&D5 is definitely based on those ideas, in the same way that Planescape itself was based on the ideas of the AD&D1 Manual of the Planes, but it's had three editions to evolve through. The only clear reference I've seen to Planescape since 2000 has been the continued existence of Sigil and the use of the term 'yugoloth,' and even Sigil has undergone iterative changes from its original concept.
If you look at the D&D5 map of the cosmos, the elemental planes in particular are substantially reinterpreted from their Planescape versions, and Planescape never made effective space for a Plane of Shadow/Shadowfell or Realm of Faerie/Feywild.
If, on the other hand, you mean that it is the D&D5 default that all worlds should have the same cosmology, that does appear to be the intent, at least for the official settings. This I have always believed is for the best, although I'm the first person to agree that cosmology should not look like a '90s White Wolf fever dream.