Listening to the Vocal minority is always a terrible idea.
Attempting to make it "Better" for them always results in a worse product.
An optional "Tutorial" option for Character creation, or for "First time 5e" players might help smooth things out, as the game does feel like you need some "Basic" knowledge going into it.
The "Class Features" should be included, in the same section of the Character Sheet (N) that lists your Class Features, its a minor oversight and should be an easy fix (they already put level up info there, they just missed some).
Sure, a lot more "Help" could be handy, there are better examples of games Help linking EVERY mechanic on mouseover, variable difficulty is a nice option, but trying to "Fix" a D&D game because people don't know D&D feels wrong.
