LoadOuts... Look Into LoadOuts. It's what you want.
LoadOuts are Not the 3 Config slots. They are stand-alone configurations that then have the 3 config slots as well.
They are quirky and weird, but once you figure them out, they work great. Note once you go passed the initial quantity, they cost 20p a slot.
Example: I have an "Index Rhino Prime" and a "Rhino Prime Std." Same Rhino. It makes no sense to build 2 or more of the same frame with Loadouts. Also have a Cataclysm Limbo, et cetera, on and on. I just pick what I want from the Loadout list and go.
They Work. Period. Good Luck.