What?
The name Seven Seas originates from the water bodies that essentially comprised ancient civilizations' universe (at the time), namely the Mediterranean, Red, Black, Adriatic and Caspian Seas as well as the Persian and Arab Gulfs.
As far as I've seen, there's rarely ever any "Mediterraneans". If this were a seven seas map, Greece and Italy would just be connected to Africa.
Just like 20% more water and a little more connections would go a long way, and that can and should be achieved with a "high sea level" option which is confusingly absent.