Instead of jumping through the current needed midi send/receive process to control OBS scenes automatically from Proclaim scenes, it would be easier if Proclaim scenes allowed controls for pressing a user-defined set of keys and/or launching a user-specified executable file.
Hotkeys should allow the control of OBS scenes natively without the use of the Midi send/receive. If hotkeys doesn't work/isn't feasible, then allowing the user to specify an executable file to be run on the Proclaim scene trigger would allow the use of custom script files from tools like AutoHotkey, AutoIT, etc. to run the operations that are needed. This would significantly expand the flexibility for available actions on Proclaim scenes.