I was originally working on turning my Titans Return Breakaway into Minerva, but something made me decide to instead rebuild him to be more like the G1 toy. Your guess as to what is as good as mine.

The first step from that point forward was to hack the car kibble off of the arms and glue it into large panels as seen here.

Then there was this part: Devising a rig to allow the canopy to not only open and close, but also to rotate, all while still allowing the seating of a Titan Master.

This is a fit check, making sure that the canopy mod, the foot relocation (only done one foot so far), and the leg-swap and pelvis mod all work together. Happily, they do. You can also see the work being done to clear the way for a new back windshield.
What remains on the body:
Finishing relocating the other foot.
Finishing the back windshield work.
Building and painting the halves of a new spoiler.
Filling where the arms were left exposed by hacking the door kibble off
Creating mounts for the door-kibble swings.
Painting and clearcoating the arms
Reassembling the arms
Gluing the hood to the faux-hood to use that as a mounting point
Filling in any remaining gaps and getting the whole thing reassembled
Painting the wheels
I also took "Throttle" apart (and almost broke both his legs doing it), and will be modifying him to better resemble Rev/Lightfoot's Master Armor. This will involve new chest detail, and swapping his head with another TM (probably my spare Fracas).
Gah, changed my mind back to Minerva, so about all of this that still counts is the rig I developed and the work on Rev.