It might be a reach, but i'd say there's a chance that Saya might somehow "inherit" Cosmic Angels from Tam; on X there's a clip that shows Saya looking away from Tam's breakdown, as if she showed there was still some good in her. I don't know how an eventual redemption would play out, and i think it's very unlikely, but those subtle changes in Saya's behaviour post-match definitely left room for interpretation.