If you are a WHM without Swiftcast, you are holding back your team at endgame

[Moirear]

It's not an excuse at all though that's what you don't seem to understand. There is no one shot move in the game that randomly kills someone requireing an instantious heal or ressurection that cannot be avoided. If people are playing thier roles correctly it isn't needed so seriously stop acting like an improvement is a requirement.

Again, at the risk of pointlessly repeating myself one more time, the only situation where cross-class skills fundamentally matter, is endgame. Swiftcast is not just useful for correcting mistakes, but casting every spell because over time, you will be casting spells must faster.