I think that making blast furnaces compatible with jobs would be a good addition as right now I cannot smelt sand as fast as people are selling sand to me. Blast furnaces were added to Minecraft to make smelting faster so I think this should also be made compatible with jobs so that the reason it was added can be used inside of Meep. Possibly also making smokers compatible with jobs would be good but I'm not sure if that would increase smelting speed for anything that gives jobs xp.
Edit: I have learned blast furnaces don't work with sand but it would still be beneficial if this was added for blacksmith job