So, I put it into The Gridmap (Link only, >4MB).
Here is just a mishmash of how it looks like with a createmaps map.
Here’s old versus new:
And here’s some problem areas with a crudely drawn “fix” you might want to consider:
Also, since this matters somewhat on deciding if that thing in the south is a river or a big lake, I kinda want to draw in a coastline of Blackmarsh. I’m likely to just drag that from the (dead) province attempt, unless anybody has anything better to base that off of.