After some deliberation, I had to choose "No, I don't think so"
Reason being, aside from not needing a timesink, I'm perfectly comfortable right now, waiting for XIV.
Even were I to play again, it would take me until XIV's release before I could really get into the meat of the game. Knowing my play style, I'd probably just be reaching the point I was when I last left it. Playing every so often, as Eorzea describes, is tempting, but my aspirations for an MMO have evolved since I played XI 7 years ago (oh god.. what have I been doing these last 7 years... 7 years?! Oh my .... Can't..be....) And what a grind... It was enjoyable only when there was foreseeable reward (Chocobo License).. Once I attained that, I found little reason to jump back into 2 hour party search and 6 hours grind sessions... I was also fresh into college, and couldn't afford to be slacking (though I was quite an accomplished slacker, believe me).
When I originally jumped in, XI just came to PS2 in North America. My mind was blown just hearing about the game, and it was graphically competent for a long while after.. But, anymore, I think I'd need just a little more eye-candy. Also, the vast environments are just a little too barren, even with a highly populated server, for my current tastes.. and of course, the reasons in the preceding paragraph.
I'll be here, waiting for XIV.