hey, loving the mod. or at least, mesbin. very unique. haven't gotten anywhere else yet.
i wrote a kOS script for generic ascent guidance. it's really basic. but i didn't find any other existing scripts designed for optimal *mostly constant altitude ascent on a massive airless body. and mechjeb just doesn't know what to do with it at all.
behold, 30 minutes of work and no prior experience in kOS.
https://www.youtube.com/watch?v=tlyf35LJMHU
behold, 3 hours of work and 2.5 hours of prior experience in kOS.
https://www.youtube.com/watch?v=GAqjdRDIiLA
ships that are slow to respond to input could probably use another alternative PID setup once they get going, but it's not that big a deal. the acapello v did better than my manual run, anyway. well. maybe. the fuel masses at the start were a tiny bit different. bottom tank full is too heavy to takeoff. didn't check circulization dv the second video either. a rerun with equivalent starting fuel mass left it with 1990 in the first stage. humans officially outmoded.
the kOS: