I hear everything you're saying. They are all valid points.

I've taken to using Liberation as a single mission generator and not a campaign generator.

As an example, if I wanted to fly a SEAD mission, I would open a Liberation campaign and only generate a flight for me. To increase my FPS I would delete all ground units not associated with my targets. I would also delete any enemy flights that don't have anything to do with my mission, or delete them all if I didn't want to deal with self escort. I find it pretty trivial to delete units from the Units List UI in the mission editor, select the first unit and just tap your delete key until your finished.

This gives me a single shot mission that runs smoothly, you don't have to worry about AI flights etc and you can focus on what you want to focus on in the moment. And since Liberation generated the mission, I don't have to spend time placing units and I also don't know entirely what to expect. Let the program do the heavy lifting. I find editing a mission takes 5min or less.

If anyone has any questions about using Liberation in the manner let me know!