It's kinda like Ashe and Caitlyn. Riot will redesign them for stories like this but their iconic look will stay pretty much the same. Well maybe just for Ashe, Caitlyn may get an actual VU soon TM.
Comics do this ALL THE TIME
This would still need work if it were to end up in the game as it's a bit generic. Because they have to stay true to Nidalees' in game design which is somewhat generic (female tarzan) but at least in game she still stands out as a unique champion because the trope is being embraced wholeheartedly. This Nid kinda looks like an NPC in a Bethesda game that gives a fairly important quest, not a character you play as. It's too "in the middle" of both camps.
When Nid gets a real VGU they will have to find a new aesthetic for her to free her from Tarzan woman trope. If they want to. Nidalee is actually fine in my mind among plenty of awful designs we have now that are on the high priority VGU list
