Never underestimate the power of having one character who can switch between all available classes, at least after earning the advanced ones at your discretion. I know it's a constantly vaunted feature of FFXI, but the job system is arguably the best feature of the game. It means never really having to roll alts, unless you've got to have another race or you need a mule.
Of course, the system wouldn't be nearly as good without the sub job ability earned at level 18. It makes players want to actually try to level other classes, as the ability to blend two of them is far too enticing.
I haven't found a linkshell on Siren yet, but I also haven't really looked, either. Thankfully, I've run into plenty of players in both Batok and the outlying newbie zones, so I've no worries of being lonely for too long. In addition to that, since the Level Sync feature allows higher level characters to gain experience along with lower levels I shouldn't have too much to worry about. Especially since I hear Qufim is more popular than ever before -- Jeuno was one of my favorite places originally, as it reminds me so much of Ivalice.
But for now I'll be setting my sights on Valkurm Dunes. A beautiful place where crabs can kill entire parties of adventurers -- and let's not even mention skeletons. I'll of course be keeping my eyes out for the proper items required to attain my secondary job at level 18, likely with the aid of my static party. Hopefully, after another week or two I'll have some interesting tales to tell and, my hope is, some insightful commentary on both FFXI and what we may be able to expect from Final Fantasy XIV, as well.