(WIP) Tamanak Plate Tectonics + Tectonics Questions

[CTA]

Ah, that makes sense. I'll make those changes.

[CTA]

So the more I thought about the Rarenarena plate, the less its movements made sense--if the plate is moving south, for example, shouldn't the subduction zone at Lykenel A also be moving south? Therefore, I smoothed out the western boundary of the plate and rotated the continent slightly (so now it's moving almost directly south) and made the eastern wing its own plate (Kidder Plate). This is the resulting map (prior boundaries still apply, with Rarenarena-Kidder a transform boundary):


(disregard the weirdness in the northwest corner of the Rhandas B Plate)

I can update the videos, but I think the movement makes sense now.

[CTA]

Unrelated question: what happens when you have a supercontinent breakup and two adjacent plates move away from a third? How do the mid-ocean ridges behave?
To illustrate what I mean, here are the three possible scenarios I thought up (black = plate boundary, red = mid-ocean ridge)





In case it's unclear, the two lower plates are moving southwest and southeast, respectively, and the upper plate is not moving.

Which of these scenarios (if any) is closest to reality?