Until we figure out a way to have it integrated with various events within the game I decided a standalone mod was a better option. I followed acejedi's guide for the surgery but then i simply extended the battery box to the front of the cabinet where i will add an additional on/off switch. For activation i soldered a wire to the touch sensor plate and ran it to the front of the cabinet and looped it around the flipper button. When you place your hand near the left flipper button grogu comes alive pretty randomly and has the factory programing routines and sounds.
Quick video I took as soon as i got it working: