Would love to see an enchantment for the inventory furnaces to boost the effectiveness to run recipes faster (if an enchantment was too much a shift-right-click gui in which you can insert boosting items is also great, even better), and maybe furnace variants like inv blast furnace etc.

Also a suggestion that might be out of what the mod was supposed to be: A tile entity with expandable inventory supporting all factinventory widgets so that you can compact your furnace arrays into a single block.

More mod compats are expected, though for now I have no idea which to. Maybe mods that expand the player inventory?

Feel free to simply reject it:)

I'm not sure about the furnace upgrade, but furnace variants seems like a good idea.

If I add a container to have more space for automation, I think an item with an inventory would fit better. Something like compact machines, but instead of a 3d block space available in one block, its a 2d slot grid in one item.

I have an idea to make my items work with mods that change the player inventory, but it will be a while before I implement it