now there are only uranium cells,cooling cells etc..
i would like to suggest a system such as by crafting a 3x3 , ,etc you get a tier2 item with increased cooling etc
example a would create a 5 Eu/t and 10 heating but a tier 2 would maybe create a 10 Eu/t and 20 heating? this would require more resources but allow a more effecient reactor system and a tier3 item would require a 3x3 tier2 cell and create a double in its value example 20Eu/t and 40 heat?
add more function to extractor such as water bucket > ice block ? "extractor" extracts the HEAT from water