Rolling an alt in FFXI was masochistic at best. It just took way too long to level and do all the appropriate content just to be relevant end game. That's why things HAD to change and thankfully did with games like WoW.
As much as I loved the one character multi class system; it's nice to play another race to spruce things up a bit. Plus I love the ideas behind the legacy system, it makes you seem like you're building a family of sorts.
Level some alts; experience as much story as you can, run Ops or hard mode Flashpoints, collect holocrons, PvP.... there is A LOT to do in this game if you open your eyes.