I wish in the config files there were settings to control the rate that various fuels are used up... Preferably separate configs for combustion, normal fission, RBMK fission, fusion, Watz, SAFE, and DFC, fuels.
I want this mostly because I find normal nuclear fuels to burn up too fast, and RBMK fuels to burn up too slow. It would also make it feasible to use coal power early-game, when currently solar boilers are really the only good way to generate energy before you get nuclear stuff.