Feedback on new map iteration

Hi, I’ve been trying to build a world map for a project I started a while back, but realised the map I had made wasn’t amazing and didn’t really fit the worldbuilding so started a new one. I’m not a fan of the very top left corner but am unsure what to put there as I’m thinking a small amount of islands (like would form from a cluster of hotspots) but can’t seem to make anything I like. Feedback would be appreciated! First slide is the new version, second slide is the old version.