Forgot to take a photo of Diac but yeah I was thinking Microman. The head is painted silver instead of chrome but the homage is clearly there.
As for Laser Optimus Prime. I totally agree that it has fantastic engineering and articulation for its time. The sculpt and deco are pretty 90s though. The Black Convoy redeco back in 2000 did this mold justice IMO. The design had aged gracefully and did not look out of place in Car Robots, among what I still consider some of the best toys of the 2000s. I'm happy with this Voyager prime as my modern/CHUG version of Laser Optimus; that's not to say Laser Prime is not good enough, but that it would look aesthetically out of place among modern Transformers.