2 things:
1) If it is legitimate to question necessity of requests ... then it should be perfectly legitimate to question necessity of denying those requests, based on exactly same precedent.
2) It dont "precisely mirroring existing content" ...
Bcs Variant Human get reduced Ability Scores improvement, and (more importantly) its for single race only (Or at least i never heared anyone around here talking about Variant Tiefling, Half-Orc, Dwarf, Halfling, Gnome, Githyanki, etc.) ... it dont even exclude that missing content, bcs as it was said, Variant Humans would simply get two feats instead of one > Ballance restored.
