I'd like to see the Variant Human, as well. I know that it is seen as unbalanced/overpowered, but the basic human is substantially underpowered. The concern is really about feats at level 1, which skews things for the first "tier" of play. If this is really a balance concern on Larian's part, then they could consider limiting the selection of feats at level 1 to avoid some problematic selections.
The Echo Knight is a weird one - it's from the Explorer's Guide to Wildemount and Critical Role. Much of that book is not as thoroughly playtested as a typical D&D product, and it shows. I'm not sure it that it really fits the Forgotten Realms and is pretty campaign specific.
