Yeah, what's been your experience with gathering plutonium actually? Since it's been proposed and discussed a bit in various places increasing the success chance of centrifuging so you need less Pu-244 to get the Pu-241 plate, and also increasing rate of U-238 centrifuging so you need to centrifuge less per U-235 as another change along with it. Been sitting on the git for a bit actually unsure of what to do.
And yeah, none of the use core stuff should be that complex or out of the way, the only possible bit is the Pneumaticraft stuff as you should already have all the GT components including epoxy going at HV. Pneumaticraft is nifty though, having the ability to produce PCBs helps massively with late game automation anyway as they're needed for both OC and PC drones, use core golems, and BC robots. All the really versatile in-world automation options need them.
Reminds me, that's another thing for the thaumcraft list.