Sounds like Temper is going the route of SCH's Libra, Animus and Adloquium - new abilities that sound good in concept but are so low in potency that they're barely worth the MP and casting time.

My biggest disappointment with both of these jobs 76-90 is that the levels have been filled with soooo much fluff. I really hope the test server allows some of these things to grow for the better before update time.

So waiting to hear that Spontaneity is a 2% casting time reduction...