>>716128332Genshin has combat that's super boring to play, but has more system-level mechanics that create synergies between characters, which makes teambuilding interesting in a way.
Wuwa has almost no system-level mechanics that create inter-character synergies, but it controls better, has more in-depth character kits, better enemy design, and actually has a decently high skill ceiling in terms of execution; quickswap teams can get super sweaty.
Elemental reactions are neat in theory, but
1) they've never been balanced, over half of them were shit at launch
2) powercreep has rendered every non-amping reaction mostly useless on its own merits. Transformative reactions now exist only as keys to unlock character kits, which is significantly less interesting. Now in Nod Krai, instead of buffing the shit reactions, hoyo's idea is apparently to sell you new lunar versions of existing reactions that you need to buy nod krai characters for.