Right, I don't need the HD map now. I need to wait after the tectonic map, because it's possible that we need to adapt the map. But I would like to do it before the mapping frenzy.

It's possible to gain some land here and there. For example, I filled some gaps in the north pole (covered by ice anyway) and some holes in the east central continent. I don't know if they were intended or not.
Attachment 66355

Or I could let some gap one to create some passages like we can see here :
Attachment 66356

We still have a smaller continent in the east almost touching the other one.