As long as BM isn't the sole focus of Elbaf (she quite literally can't be after this), then it shouldn't matter.
Elbaf likely has to do with species lore (which oddly coincides with BMs dream) and is likely more of an adventure arc than anything. Up the tree? On other sky islands? Moon lore? 4th RP? Usopp's central arc?
But a big thing really can be tied back to Gigantification and Vegapunk. Maybe an Admiral and the SSG. Kuma's plot still needs to be resolved with Bonney. Urogue and Bonney have not gotten arc screentime yet like everyone else.
Or maybe Vegapunk/Elbaf are separate arcs and Elbaf isn't even next