Not too bad:
A lot of problems with scaling to map sizes and the current range of map settings though, so that is going to need some work.
I still foresee a problem trying to scale the sea level while keeping continents generally together in one piece. Right now, raising the sea level means raising the number of water seeds which chops the continents up into swiss cheese. I will see if I can work it out so that raising sea level simply lowers the land seed quantities.
I have a method of placing water seeds all over the plate boundaries so hopefully that will be enough to shrink the continents while keeping their form. I plan on making this a setting as well where raising or lowering the boundary seeds will allow players to generally influence land bridges creation between continents similar to Central America, the Middle East, etc.