>>39807577I was trying Bugsy yesterday for grinding Support courses and I know exactly how you feel. It's also how I learned that they programmed some kind priority based on posititioning and the leader.
Hau is my go-to for Normal and Hard courses. He one-shots the former and two-shots the latter. I was using Sygna Suit Brock but Discharge hits just as hard and has 100% accuracy so it became an easy choice. If I could max out Hau on Power-Ups and get him to level 100 (as well as start using Gear on him), I'm sure he'd OHKO on Hard.
I'm finally approaching 9999 Training Machines like you did, but I haven't set up a macro because my game always crashes intermittently and there's no accounting for when it happens. Now I just watch stuff on my computer while grinding the game off to the side. It's become muscle memory for positioning so that it becomes annoying to not select a specific course after you max out the mission. And at some point, I'm thinking of going for 9999 of most items, but I'm sure I'll hit 9999 Ultra drinks in my inventory before I hit 15k in my mission.