Why the hell is Danny so nerfed? Yeah, there's the normal explanation (Without nerfing, Danny would be the most overpowered character in the game), and Calamitous did seal his ghost powers in Toybots, but he was just as weak in the previous games. And don't give me the "holding back" explanation. Danny may be dumb, but he's not Too Dumb to Live.
I'm just as disappointed as you, to tell the truth. I assume it had something to do with the creators wanting each character to have the same power level, just in different categories (ghosts, magic, science, and...sponginess, I suppose) At least he seems to be the leader of the team during Battle for Volcano Island while Jimmy isn't there in spite of SpongeBob's constant spotlight hogging.