I don't notice a blotchy look left behind. ..
Coraline like all things is going to have a ebb and flow and as long as more is growing than is receding I'm pretty happy with that.
Mine have yet to cause me a problem. I generally try to extend the benefit of the doubt towards something, I don't worry about it
until I see/know for myself that something is a problem. Problem with going with what other people say is that there are always exceptions and norms and it's not always clear which case is which.