The money thing is there to be resolved, yes, but with all the experimenting done so far, I'm not sure we'll have enough left to put on a proper show, and there are no other obvious quests, either main or side. Given that, I'd be ready to head home and experiment some more.
> "Hmm."
> Still no sign of that tear?
> Do our socks feel ripped?
> Look at Shanghai and Hourai and compare their sizes to our size to get a gauge of how much larger we are.