Do the same with the other furnace types as you did with the furnace. :-)

Done in 4.0.0 ;)

Yeah, that is planned, however it will take some time, since making it look good with the other furnace types is time consuming :)

If I get to do this I will also add compatibility with Kiln.

What about compatibility with https://www.curseforge.com/minecraft/mc-mods/sentimentality-2

This seems like a lot of work when done manually but I'm sure it can be (probably already is) somewhat automated.

The furnaces all look like the default variants, exept for the colors of the textures, so I could use the same model for all of these and just apply a different texture. Shouldn't be too complicated, but we'll see.