True Elfman has had more incidents of power ups compared to Mira, but it feels as such because it implies Elfman has more room for improvements while Mira is already at such a peak, it's almost like a plateau. No offense but claiming he's above the S-ranks kinda feels far-fetched but seeing that you're an Elfman fan, maybe that excitement is understandable.
Anyway, the Laxus and Levia fight felt like it was getting nowhere. Levia's magic also having some connection to souls, I feel like it could have worked better Laxus was still having the complex with Elexion. Or if not also, match him with Mira/Elfman and involve their Takeover souls.
Mira has been spicing up lately and it's such a shame it's being shortlived by giving the spotlight to Elfman, whom, while I like is getting good screentime, has been receiving too good a treatment hehe.
PS.. Mira's face while suggesting the Full Dragon Takeover looks like the old scenes where Gray would ask, "which idiot thought that?" and make Mira cry haha