Hei, greg, i just came by to drop a suggestion.
So i was thinking around the fussion and fission reactions and i came with a idea:
For those who arent familiar, there are two types of nuclear reactions: Fusion and Fission. Fission is the one used in regular Nuclear bombs and reactors. It involves a heavy atom splitting into lighter ones, releasing large amounts of energy in the process. Nuclear Reactors split small ammounts of uranium, using that energy to boil water, make steam and produce energy. Nuclear Bombs split large ammount of Uranium in order to release Larger ammounts of energy, by other words, Boom.
Fusion reactions smash two or more light atoms (usually Helium or Hidrogen), creating a heavier one and releasing more energy than on a fussion reaction, however, this reactions need more energy to start, that's why they arent used in reactors (except in Gregs Fusion reactor, which consumes energy to start). They are used in ThermoNuclear bombs, which use a regular nuclear bomb, to trigger a fusion reaction.
So, there's my suggestion: ThermoNuclear / FusionNukes. The recipe uses a nuke (or more), Helium, E.t.c (already obtainable in the fusionreactor).
This would be expensive (considering the price of nukes in this addon and the cost of said components as helium cells) , but creating a Bigger blast than a Nuke. Easy and simple.