Looks much better. Now, that new layout will have implications in tectonic movement.

That amount of ocean floor means the continents have been moving away from each other for a couple of hundred million years. How do you explain that they are still touching on the northern part?

Option 1:
Can you make them move with a euler pole that they actually rotate, spreading in the south and colliding in the north? This forces the sea the have more of a triangle shape (narrow in the north)... Would this imply too many changes elsewhere?

Option 2:
The north is actually a separate plate, that slid side to side with the western plate, passed on top of the oceanic dorsal (subducting whatever ocean floor there was and shutting down magma extrusion there) and is now colliding with the eastern one.