You could take a look at the fields in the attached zip, Aoi99. I mean in terms of not losing sight of the woods for the trees as a consequence of your own truly excellent and beautiful fields being a very 'detailed' version of Ferraris. I'm very clumsy at doing this kind of modding, so they're not much like the Ferraris 'big' fields in the pic in the post above, but you might get the idea...they're just your own field tiles modded to try to get those sorts of less noisy lines that we see in the Ferrari picture in the post above.
https://www.theblitz.club/uploads/files/...%20zip.zip
At 100 zoom, they look like this - they're no where near as pretty, but they do allow you to see detail more, such as the contours:
But I'm sure you could do something much better. Sadly, I don't have your art skills.
And none of this solves the 'top hex edge' problem in the field tiles. I think that must be some kind of bug, you're right.