When I continued after clearing Timespinner the first time it dropped me at a place where I could go right to picking up a 2nd ending.
NG+ even at a harder difficulty (except not really because I'm stupidly overpowered now) is going a lot faster. Found a few new things this run through.
Will probably go for the platinum trophy eventually. Not sure if I'll need to do a third play through to finish that up.