Question

having the compressor allowing you to see the key signal you want to use and allow us to side chain midi and audio

Answer 1

Would be really handy, like the way ableton allows you to set the sidechain source on the compressor itself rather than going to the source track and sending it from there. Cubase just added this feature to v10, looks super handy for managing sidechain signals. Studio One should definitely do this too...