I was thinking of reusing them for the BBTAG variants. I removed them in the first place because of the mismatch small portrait with the UNI 1 big portrait, and 2 Eltnum having the same Alternate Big Portraits folder is kinda unnecessary.

and yes I'll be repurposing their UNI1 voicelines, and the new Art style you see from my planned characters section uses her birthday illustration.

Force Palm is called an "EX Variant" when it was just a completely new attack independent of Iron Tail.

But for the Astral Heat, I think the final beam looks extremely weak for a final attack. Using a larger beam effect (and also a expanding blast would also be nice to see)

Reimu/Cirno: I feel like that, despite the effort, the characters feel lazy as they're just Ricepigeon's characters (or rather Mr. Giang's edits) given a BBTAG coat of paint. You could've done something else to spice them up a bit more, like making the EX versions pop a bit more, and also replacing a special or super.

Also Perfect Freeze doesn't feel that impactful of a Astral Heat.

If it ain't broke don't fix it. I've been doing things this way since literally I started with Rentaro, I base all of my characters from their source games. In this case I used Rice's Touhou game.