I am curious about BLU mainly because the cap is currently at Lv50 and PotD is Lv60.
While the Job design is such that they could just use it with the existing abilities at Lv60 I am curious if they will be allowed in PotD when the cap is raised to 60 for the job.
Again, it should make sense. If you get the achievement for BLU clear, you're not taking away the achievement for clearing with any other job...
And I'm not sure how much development work it would take to implement ... I can't imagine it would be much.

I have hopes for Squadrons because the devs have tied Grand Company promotions into clearing Squadron Missions. They plan to have many more rank promotions in the future, so it stands to think they are going to really expand on squadrons as being the go to for pre-Shadowbringers/Trust NPC AI. And really, especially for Deep Dungeon, they should be very viable ... They don't have to be perfect. Just the basic commands. If they're flanking you in the dungeon and attack what you attack, that's perfectly acceptable. I mean, if they can properly dodge attacks, all the better, but I'm not going to be overly picky in this case. The content is designed to be cleared any number of ways. The 'extra help' of even basic NPC AI so long as they don't go tripping every trap is a welcome help ... which again, takes nothing away from the achievement of completing it actual solo.