At higher levels, yes. The mechanics definitely change as you level up.

I'd save them for later, lvl10 or 20 perhaps.
That doesn't really seem to make a lot of sense though. Wouldn't you want the solo leves to be at low levels so that people can actually learn how they work, learn their jobs a bit, and understand the mechanics of group battles and what not? Still seems like a system that isn't working properly if you ask me.