Question

As the title says, Say I wanted to expand on the grass overlay example by giving some variants which made the overlays have less of a repeating pattern, Would this be possible? On a normal block model, This would be done by having a blockstate file which uses different model variations. But I have not found a mechanism to do this in the mod so far with connected texture overlays.

There is indeed no way to do this through block model modifiers currently. I do intend to, similarly to blockstate files, let you specify an array model options from which one is picked randomly.

You can however still just overwrite the regular grass block model however and add the overlay to that. Here is an example which happen to have from another issue and which uses the same idea for adding an overlay to diamond ore: Emissive diamond ore.zip