I don't know, randomly I'll say: "Iridium Reflectors" A modified Iridium plate that only reacts with Depleted Isotope Cells that are being enriched. (And ONLY if they are being enriched) It adds an extra enrichment pulse, but also causes them to generate more heat. It has zero effect on the EU produced, except that it attempts to bake your reactor even faster.
Or "Primitive Steam Turbine" It produces 0.5 EU/t per 1000 heat of the reactor hull. Unfortunately, as the name suggests it requires water. After X EU are produced it needs to be replenished, by putting it on a crafting table with a water cell (or multiple). Say after 1000 EU, you refil it...or it does nothing and takes up precious space.
Maybe "Reaction Catalyst Cell" which slowly depletes itself, heating the reactor up if the heat is less than 200 * Catalyst Cells present. It's primary use is in breeders, trying to raise the heat to the desired reaction level. As ever, calculate at your own peril!
Then there is "Integrated Transformer System" It takes up space but it stores energy and throttles the reactor output to packets of the desired size, 32, 128 or 512. This helps make sure you never burn out your wires if you have a power spike. There is a downside though...if you store too much energy in the reactor, that will start generating heat.
"Energy Storage Node" It works with the Transformer, increasing the 'safe' amount of energy you can store in a reactor. This could be very useful in a burst run class V reactor. Each Node increases energy storage capacity by X. Sadly, excess energy will still cause heat...just not as fast. If you don't pay attention, you may find yourself ducking under your work bench and covering your head. Yea... Duck and Cover...always keeps you safe.
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