No stat caps as far as we can tell. Due to itemization, I would predict that if there are any stat caps implemented, they are at such a high number they will never be reached.

There are less gaps between the DPS jobs than there were in during beta phases. DRG and MNK can get very close to each other on single-target. BRD is much better than we thought from beta testing. We won't proscribe anything for others; go to training dummies and see for yourself (level 1s work fine, there is no level correction for raw damage output).