lol lets see....
about the massive amount of skill things:
yes its true you can go from a 99/50 non trans OR a 99/70 trans to the new third classes, and yes that'd be a ton of skills, so for that reason the new skill window was implemented which divides the skills up depending on, first class, second class, etc
and as for monsters over level 99.... there are already a bunch =X
in the new world xD