What if we got the Sub-Job System in FFXIV?

[Freyt]

It'd also mean White Mage is the only sub job worth taking on any healer so what's the point?

First, these are just examples. If you don't like the examples, then envision an example that you do like. Second, Astrologian and Scholar picking Raise would be immensely dumb, considering they already have revival spells. Third, any tank or physical DPS, in addition to BLM, could utilize it.

The point is that if you're confident in your ability to stay alive but don't want to join as a healer, then you can account for the shortcomings of those who are likely to die especially if it is the healer. It isn't so powerful considering the only job that could utilize it with Swiftcast here is BLM, which simply puts it on the same level as RDM and SMN.