Do you have an email, discord, (or use instagram as I've tried to reach you in the past) that I could use to run some ideas past you? I have a working concept that'll allow the user to use your art style in any tile format variation and have a tile able to be blended with as many biome types as it wants to, atm I'm without internet for several days but I've taken a picture with my phone to show you what I mean. P.s.) If you want to apply this method via setting it up, it'd require 4 layers ontop of your original layer having 1 for each side. When I get this concept up and working with all biome types, I'll turn them into rule tiles and create it as a unity asset pack for you so that anyone can use it in this format without having to setup the rule tiles / code and be able to play with or use it right out of the box. (Huge fan of your project, I love it)