No problem, I'm not really dying for the change. I knew from the get-go that I was playing a mechanically gimped character, I just figured I would see what you thought given the fact we just changed the summoning/binding rules rather significantly.
In my personal opinion, I feel the ability to possibly pre-soak all of the already increased drain of a preparation is readily off-set by the fact that you can't just cast the spell repeatedly during combat (not to mention that you have to learn separate versions for spells and preparations). If you don't have another preparation available, you're basically fucked. If the dice don't go in your favor when you activate the preparation, you've just wasted your turn. Even if you do have the minutes needed to make another preparation, you're basically losing the whole benefit of preparations, namely that you can pre-soak the drain.
Again, no complaints from me if you don't want to change it. Just figured I'd ask.