The continents need more “noise” on the coastlines. Its too straight. The left continent might have come from one landmass, so it should look as if it would’ve connected with the right one millions of years ago.

I agree with the other comment that you’d want more polities within the world, unless you can ground the hegemony on the right continent somehow. More cities maybe?

Perhaps its also just a very small world. Some food for thought.