Maybe "Filter Variants" within the primary filter would do the same thing.....
I think that also having more control over lighting would help clean up some of that too.....like options to lock lighting controls in randomization, omit lighting from randomization, set up and remap parameters of lighting controls to include in control panel, etc.....to mop up duplicate filters that only use different lighting.
I'm probably the biggest perpetrator of this ineffiency.....for a couple of different reasons. First, the mechanics are virtually the same, but the effects are different and viable.....so I make a separate filter under the assumption that not all users are going to pop the hood and tweak it to get it. I'm assuming that the general puplic is just going to use the controls that I give them and that's it.
Second, worthy stand-alone effects can be burried within the overall effects of a filter.....and would be more efficient for use as a stand-alone filter. Even overloading presets with the burried effect would not allow the user efficient use of it because controls can not be locked in randomization.
All in all, I think that you are right about finding a more efficient way to do it.....
Speaking of efficiency, I've found quite a few disfunctional filters that look like they have been intentionally dismantled and dumped back into the library.....like "Iron Age", "Malachite", etc.....
Steve
"Buzzards gotta eat...same as worms..." - Clint :)