SE also have consistently failed to push the strength and flexibility of the armoury system. With the number of jobs we have now, IMO it makes perfect sense to have some jobs more suited to content than others. As long as everyone gets their time in the sun somewhere but being off meta isn't crippling, it's all good IMO.
Before someone comes along and says 'but noooo, it'll be bad because 'insert favourite job here' will get blacklisted from PF in content it's not meta for'. My honest response is 'deal with it, make your own if you care'. FFXI showed the strengths of this in action perfectly. I'd always be one of the first to arrive at the raid and I'd usually start out on SCH so I could cover a bunch of different roles until more people turned up. As the raid gathered I'd switch out to BRD, WHM or BLM as needed and I can promise you, the variety of gameplay really kept things fresh far longer than they would have been if I'd just have turned up as BRD and spent the evening on that day in and day out.
Sometimes you've got to save players from themselves and pushing a bit of variety on them is a good way to stall burnout even if they aren't entirely onboard with it. Besides the penalties for switching jobs are minute in this game compared to a more traditional MMO like WoW.