1) Because to place a banished card in the GY you have to "return" it per standard card writing.
2) It's good for reacting to either a multiple effect board or to hit something like apollousa which is once per chain but not once per turn
3) Skyburner will struggle to summon this on its own turn when it would be most relevant, and generally would have to sacrifice the first part of its fusion ladder to make it.
4) I'll keep in mind a reduction on the protection, for when a BT member decides to look at these.
5) Yes, I thought it would be amusing, it's heavily in-theme and it doesn't actually interact with blitz much outside of being searchable
6: If you want to comment on archetypes on the forum here in the future, especially if you're attempting to make balance comments as a non-BT member, I would request that you keep it to the discord.