Well i doodeled around in my mind jesterday with posting somtging for bots.It was in my mind for a next tier like basic steam bots, they need a bucket load of water and two charrcoal. they do work same as basic ones but hold about 30-50% longer, and as an upgrade the whole bot as an crafting part wuld be a steam pressurized bot, that is like its basic form but faster, they need a steam charging station nearby and go there at 10% so they don't run out of pressurized steam. If this happens the chargingstation can also set up to creat small steamtanks to recharge if one bot runs out and cant charge at it's on. eventually the charging cicle is a needed programmable part.