Soranayo submitted a new mod: Yet another Charcoal mod - Gaining more Coal for less wood on a furnace. Read more about this mod...
So, yeah, if you want some other versions, with more Coal for more wood, ask us here, either me or Michan will do it, since modifying the mod isn't hard at all.
Or maybe your friends mined up all the coal on your planet. You need coal to make torches still, which is more needed more frequently than ship fuel.
If you really want coal to be craftable again there are a few mods for UG that make that happen. My More Saplings mod is one of them and I know there are a few others as well( can't think of which ones atm, I use too many mods)