Just in the context of leveling up, I prefer to load up on the CNJ skills. But they seem much less useful at 50.

The reason I like them while leveling and doing casual content is:

- yes Cure can actually save you from a death if you accidentally get too many mobs while out questing or in rare instances in light party dungeons while leveling
- casting Protect on yourself while soloing is useful
- being able to cast Raise while out in the world is also useful - I like to help people

If I were 50 and focused on tanking "serious" things, I'm sure I would want to grab MRD cooldowns, tho.