I'll be honest, I flat out don't get why Deployment exists. The job has group shield. And... slightly indirect but naturally far more powerful group shield? Like, why?
And I'm fine with it being unique with Deployment, but why also have Succor then? Would be kinda cool if you had to work around a naturally weaker but less CD-y Deployment tactics because that kinda mirrors Sage beautifully (Scholar does GCD Adlo -> oGCD Deployment, result is a very strong shield on 1 target + a 75%-80% Sage power on everyone else), Sage as the output healer has oGCD Eukrasia -> GCD shield, more total overall shield, no big shield on one person. It'd be an elegant setup, and put some special emphasis on job elements.
Eh, that's not something I'd ever be worried about. It's extremely unlikely the devs want to move towards more randomness so such a move would already be hugely unlikely, but even if it'd be some hyper-marginal randomness and have ~zero effect, anyways. Like the procs on Red Mage, that at higher levels really don't do a lot to the overall playstyle at all any more.