@Fredy31 Shenhe... my basic understanding is that she actually works by boosting other cryo characters attack. So her skill should work as a support DPS.
as for the levels... those are the weird caveats of how damage works probably
a level 40 Raiden paired with Klee becomes extremely destructive on everything that can't fly away (so, yep, you guess right... nerfing anemo suction actually makes Klee more dangerous)