Uh... basically what we have now is similar to Ragnarok Online before the 2-2 classes came out (except with job switching and no novice)
http://images.mmorpg.com/features/33...s/3386_2_t.jpg
All we need now is second jobs for each class and bam, we've got something great.
Not innovative, per se... but tried and true.
What I like, with FFXIV's system... is that while its similar to RO before the 2-2 jobs; it has its differences as well because of the armory system and classes being more "open" than the jobs with which abilities they can cross-class. When new classes are added, the existing classes will become more versatile and there will also be a greater variance of jobs alongside them but won't directly influence the existing jobs since they don't gain abilities from them.
This could, potentially, change the way the classes we have now are used completely whereas the jobs maintain their static role. The possibilities are huge.
