The finishing touch on the God Ginrai combination of Magnus Prime, Godbomber and PC-16 Jinrai Prime (Or any of the other similar combinations of LG-EX or LG35 and 42) would have to be the smallest robot form - enter Perfect Effect PC-15 Super Ginrai upgrade. Sure, it is definitely a nice finishing touch...but is it really worth it?
https://youtu.be/cBJHa2P93z0