A format probably more suited for Nostalrius

[Randomuser4200]

Do like Rebirth did: release one boss at a time. It seems like you have trouble releasing a full set of working bosses at a time, maybe baby steps is the way to go.

Guchi guchi goo!

[Vaulken]

This is actually a very good idea, for both linear progression and making sure things work at the same time. Two birds one stone.

1+ for you sir

[DrunkMonk]

+1
Very good idea imo