1) i agree with this i would love it's ruby light move to be a emote.
2) the music i can sugjest https://www.youtube.com/watch?v=wIIi90po3as (FFXV's ost - Carbuncle )
3) i have to disagree with it, it is already a super sized carbuncle, any bigger and it would become far more rediculas then it is currently. imagen a fenrir sized carbuncle it would be nuts! noone has that much aether