Disclaimer: I don't think they'll actually add this because it would involve reworking dozens of kits, but it's fun to imagine. We might get it for Snezhaya and Khaen'riah though
The Fontaine characters have an Arkhe alignment (Pneuma / Ousia) which allows them to shut down certain enemies or interact with certain puzzles, and the Natlan characters all have the Nightsoul's Blessing state which makes them more effective against certain enemies and gives them cool exploration features mimicking their tribe's saurian.
So what if the other nations had similar things? I feel like Sumeru's would somehow be connected to the Withering / those dendro sigil things / aranara and maybe the desert characters would have different abilities than the ones in the forest.
I could see Khaen'riah characters having abyss tainted vision powers and being able to interact with certain puzzles that way. (Honestly kind of hoping abyss twin becomes playable at some point)
