Originally Posted by
Rentahamster
That's just a reason to delay using it. You're still going to use it eventually, and there are no drawbacks to that - your overdrive is going to fill to max no matter what you do.
Essentially what you're proposing is a super meter like in Street Fighter. Ask yourself this - what has deeper gameplay?
Super Street Fighter - where your super bar fills up and you do a super move when you want
or
Street Fighter 4 - where your super bar fills up, and you have a choice of using up small chunks of it to execute EX special moves, or saving it all in order to execute a powerful super move - with each strategy having its own pros and cons, depending on the player's character, his opponent's character, and the individual playstyle of the player himself.