There will still be windows~ Huhuhu. They just won't be ridiculous windows. Some of the MVPs will also keep their current times.

I dunno, I find MvPs more often nowadays instead of them being camped down to the seconds.
They have different spawn times but are still campable. If they're not being camped its because noone's bothering to camp them.
As for the galion mobs, I posted something in a previous topic about why mobs shouldn't give exp.
One of the main reasons was because people could level incredibly fast using this method, and noone else would be able to use that map while they're using it. After making said char, they'd then sell it to people for profit. How is that not exploitable? You could literally hog the entire map without letting anyone else level there. I'm sure a few people were already doing this before the server swap.
By all means do go ahead and revert it to the way it was. Let's see if those "Character Creation" shops reappear again.