I'm finishing up monthly part the second with jumping puzzles. I'm not a huge fan but using the guide at dulfy.net to identify the easy ones it's much less of a chore. Turns out, of the 10 I have done so far, I've done 9 of them before and remembered how to do them surprisingly well!
I've also had a LOT of company! Sure JP are one of those places where you'll often bump into someone, there's only a finite number of them, but this morning I did the Wall Blitz with about 6 other players.
So I guess we'll chalk that up as a megaserver plus point.