One feature that doesn't seem to exist but I think would be great is the ability to make workflows app-exclusive, meaning that they'd appear only when a specified app (or several) is active and in the forefront.
For example, I'd like to make a ProTools workflow with several automation features triggered by various keywords, like "instrument" to create an instrument track, "duplicate X" to duplicate a clip a certain number of times, etc. I'd like to be able to use these keywords by themselves and not as an argument to a "ProTools" keyword ("ProTools instrument", or "ProTools duplicate X" would be much more bothersome to use), and here's the kicker, I'd like those keywords to not appear when I'm not in ProTools. Say I'm in Safari, if I type "instr", nothing appears, nothing is suggested.
You'd be able to specify in the settings of the workflow which app(s) it's enabled in.
I hope this was clear enough, but if not I'd be happy to try and explain it better.