did you try "Cortana insert CA-2A" ?
or "Cortana fix guitar masking bass" ?
sorry, ... couldn't resist ;-) but like your idea, though, so I gave it my vote ... however, this text search box should be assignable to key binding so you can quickly hit a key on the keyboard, type the first 3 letters of the FX name and hit enter to have the FX inserted in the current track with GUI open ...