I'd wager on archer and lancer personally. They tend to give jobs at least at least 1 that kinda fits with the job of choice. CNJ and BLM getting ACN, ROG getting PUG, MRD getting GLA and vice versa. ARC seems like a good fit for MCN, and, as has already been stated multiple times, if they don't have their own TP restore, well, they're going to need LNC for invigorate, as SE's trend seems to be endgame that pushes tp management to the absolute breaking point. It could be ROG. That would be hugely disappointing though, as the ROG cross class skills are probably the most blah cross class skills out there. I'm kinda hoping they might add a third cross class to each job, as most jobs already have as many useful skills as they can possible have from their current available classes (looking at you smn).