Quote Originally Posted by Dragon View Post
I don't see how you think expansions weren't mandatory in the long-run. To even get to 75, one had to have RoZ for the longest of time, then ToAU came which had better areas for getting to 75 once you hit 50+, which still had you go to RoZ-based areas prior...

The examples I gave would also require the mission completions just as well, so I don't see what your point is.
Technically 50-75 was RoZ enabled. So Yes it was mandatory, however 1-50 it wasn't you could do it in all Original zones, no one did though, just because it was quicker not to.