Naked blade dmg itself is fine and i wouldnt suggest changing it all. Blade itself is pretty balanced but arguably weak due to its very risky nature for the genji player.
as much as im against the removal of dmg boosted blade because thats not the fault of genji and rather ana, if that happens, i would suggest more changes to help vanilla blade to keep the genji more sustained and consistent. because losing dmg boosted blade would end up almost being a joke ult in higher ranks. Granted it helps the lower ranks but the higher ranks wouldnt find any reason to use blade and rather just use nano shurikens or anything.
Removal of dmg boosted blade is a huge nerf in itself so i’d probably compensate that with like a small buff to base blade such as 125 or 130, and some additional passive like 10-20% dmg reduction when in blading animation (doesnt stack with nano properties), or even 8s blade like what a friend of mine mentioned in his thread here: My patch notes (27/12/2020) . Or another approach would just be net nerfing ana’s nano to make it more defensive rather than offensive then that can work and solve the nanoblade issue.