Ok sorry... my last post was a little bit rude
Let's do it simpler. To me, the reason why this feature is requested doesn't make sense:
This could be useful when a Sprite has got several Images with different sizes. Every time you switch between them, you have to rescale the sprite, set a new center, etc
You're going to set new values according to the new image, not reset everything, right? So, what do you want this function for?
Apparently everyone agrees with this request, so maybe someone can give me a better reason, or a better way to convince me with this one