While I agree that the CC system could do with some revamping (like, why are Skull Sunder and Savage Blade CC skills to begin with?), a lot of the suggestions here aren't really sound to be honest. Also, how does WHM getting new skills as you've suggested help the CC system? Seems like you just went from addressing CC skills to a personal wish list of what you want the Jobs to get instead.

By the way, the style/flavour of Astrologian is that of a 'Time Mage', so technically it's already in this game.