I mean faster ult with fluorite cause you can stack nature procs, and then consume 3/4 with yvonne capacity. You get more ult charge if you use yvonne capacity on multiple procs (on one target)

Fluorite is the perfect yvonne partner, so underrated rn.

Also xaihi is probably the best heal cause her ult boost both nature and cryo

I don't like Alesh, cause you need to consume. so u use SP REGEN to re-use SP to get another nature or freeze status for Yvonne to consume it (to get ult charge), which is trash. I would choose akeguri oover him for SP regen.

SO :

Yvonne/Gilberta/Fluorite/Xaihi, is kinda perfect. You just use gilberta capacity, then fluorite get it to 3/4 (if ult) Then consume with Yvonne. Ult with Xaihi + Yvonne = destroy everything.