I've looked through some suggestions on here, could have missed it but...
I'm not asking that the Biomass Burners you get in the beginning are changed, instead i wonder weather the late game Fuel Generators are capable or could be made capable of burning Biomass along side the normal Fuel, made from oil?
(i do plan on trying this myself when i get back from work but the idea came to me and i needed to get it out xD)
In my factory i basicly have 1 MK2 storage container, i dump my invintory into when i come back from exploring/food hunting (cause im constantly taking fall damage xD) from there all the items are processed or sorted minus a few i haven't seen neccesary to set up splitters and storage for. In the early game Managing my Biofuel production in order to maintain power is actually a part i found enjoyable (forced me to go exploring more then i probably would have done) unfortunetlly as soon as coal becomes avalible it seems to become pointless, while the progression from one to the next makes sense, i feel that with the given apparent efficency of biofuel it would seem such a waste to leave it without any use as soon as you get somwhat deep into the game.
Allowing us to simply use Biofuel in the currently implimeted Fuel Generators, will allow us to intergrate the eariler chains of Biomass production we made in the early game, with the fuel production we set up in the late game. While continuing to give a good use for Biomass, it also allows the process to be automated (but not untill you reach the late point in the game where that balance unto automation is neccesary)
This could also add some cool logistical challenges for how you'd want to prioritise the use of Biofuel over Normal Fuel, if it is actually the most efficent fuel in the game (which i believe is stated in game), it may burn slower for the same power generated or produce more (depending on balance choice) giving you the incentive to prioritise the use of excess biofuel over normal Fuel.