Interesting.

Some of my thinking was also an unsplit svg atlas wouldn't work because the entire tilemap would be re-rendered (unless Godot handles the split). Though I guess even a multi-object/layer approach is probably easy with some sort of grid multi-export (to get individual tiles).

I don't know if it's just the video or texture filtering (or maybe non-integer scaling?) or what but there is a bit of pixel shimmer/wobble there. I am really particular about it so may still prefer 2D or 3D polygons.