Have the ability to preset the selection filter before selecting anything.
Ex: I know I only want to select light fixtures before hand, preset selection filter to light fixtures and window select an area, my selection set is only the light fixtures.
Agreed - custom 'saved selection sets' could be a drop down, and you just pick the one you need - even hold down CTRL to grab multiples. Good idea - almost like a saved 'range' in Excel, which is very powerful there.
That's actually a pretty good idea. I wonder how best to implement it though, like, put a little drop down box (similar to the select workset dropdown) right next to the filter button on the lower right hand corner of the interface? And then let you click the model category you're interested in?
Maybe there's a way that the program already knows what visible in the current view, so it automatically filters a drop-down list to only items visible in the current view, that way you don't have a mile long drop down list. I think having a drop down list with check boxes, it could be next to the Filter at the bottom right of the window.