Those ideas are all right in line with what I'm trying to do
I am working on removing all inland seas right now, either by filling them or connecting them to the ocean. I will probably tackle rivers next and the overall continent shapes will likely be an endless project since I'm too picky for my own good.
I don't touch barbarians in this mod either
I split this mod from larger worlds so this mod only deals with the mapscripts and the polar land is one of the things I'm working on right now.
I found some errors in my code that were causing some of the inconsistent results in landmass sizes. Once I get that logic sorted out so it's checking things in the right order everything should look a LOT better in game. I'm not entirely sure how much free time my wife will let me have until the weekend though so unfortunately I can't say when I have a working update.