So, two things I see come up every now and then are heat pumps and superconductors. I would argue these should go together:
Superconductors need cooling to below 80K, and for reasonable current densities (the only real reason we would use them in CDE) need to be much lower (<20K). Radiator area is impractical for this when considering the warmth from nearby ship components, but pumping this up to 100s of K is not an unreasonable power burden.
Thoughts from others in the community?
I can't actually think of a way to prototype this ingame. Presumably the heat pump would have to appear as a radiator to a module, but consume electricity to operate and also need a rejection radiator. Superconductors could almost be a low-melting material (treating melting point as critical temperature), but the heat sources would need tweaking and the treatment of voltage and current may break things.