Only thing off of that leaked info that worries me is Discord appearing again. I hated how they handled him after his redemption and I pray to the gods above that they make him more competent, IF he comes back.
One thing I am dreading is the fact that people are going to constantly demand that it continues things from G4 in give them answer. Already saw someone asking for cozy glow's backstory. The problem if g5 does stuff like that they're just turning it into a sequel