What makes the Astrologist THE ASTROLOGIST, is the Card Reading feature/skill. It's what they are. It's what they do. They're like fortune tellers. They READ the fate of the stars through their CARD reading. Exchanging the cards for a "Coin flip" is like changing the WHOLE CLASS from Fortune Telling into a Gambler class. You might as well make a NEW class called Gambler who base their fortunes on "coin flips" or "dice rolling".

I like the Card system as it is, and I would hate to see it changed.