Thanks for the replies. Both make sense. I was thinking along the lines of a preset I use from Matt Kloskowski of Kelby Training. I like the preset but sometimes it is to strong and I would like to dial it back a bit without having to guess at which settings (about 10 or 12) would give me the same effect but just a little less. It seems that it would act something like opacity in PS when you have several things going on in a layer and dial back the effect with opacity. Maybe I'm just looking to hard for something that doesn't have much value..
Thanks for the replies,