Okay, you know what, I will let whatever engine the person is using to get and draw the outlines. It is taking way too long to figure out all the combinations possible to try and bake outlines on the tileset as empty blocks with just the outline.

A possbile solution is: Every level is a different layer, one iterate through each column of tiles and draw outlines for sides that aren’t connected with anything else. To further optimize this I believe it is worthwhile do draw these lines during loading and make it a temporary texture with the same Z index as the lowest Z value on that layer instead of doing all these draw calls while rendering the game.

Thank you!

I'm still kind of lost about how the final product should look
I decided to start with the parts I wanted to do first

In terms of concerns about scale, definitely keep what you've done so far and don't scrap it! If you end up with a minimap size, a world scale size, and a more normal size, people can make use of whatever it is you make and be creative with it. I think just go with whatever you're enjoying making! No need to necessarily worry too much about it.

teapot? the big brown one? not a teapot actually, I didn't finish that one yet that's why lol. It's more like a clay pot with feijoada inside.