I'm in the same boat as you! I felt really weird creating a new character because I had no idea what I was actually choosing, like I left for a few years and came back to find that you can no longer choose from one of the four basic classes, now you have to choose from a bunch of really specific storylines? I haven't even tried to read up on the reboot stuff, that seems like a whole lot of effort for no real payoff. I'm not interested in spending real money or billions of mesos on anything.
A lot of these world have been dead for quite some time. Now is definitely time to fix this, these worlds have been empty for far too long.
I started playing MS in 2008 when there were only four worlds and I loved it! They were always busy, you could always find people for
PQs, etc. I've taken several hiatuses over the past decade but each time I come back there are a few new worlds added and the majority of servers seem pretty empty - if ch 01 isn't even half full, what's the point of that world existing?? I think at the very least they need to cut the number of available worlds in half.