Nuclear Warheads for ICBMs and other related stuff

Resizable nuclear warheads designed for ICBMs capable of traveling a ballistic trajectory and a reentry vehicle to survive reentering at hypersonic speeds and also an option for air burst or ground burst and how much yield would the warhead have whether in kilotons or megatons. You also could include a warhead bus to store the warheads and have an option to how many it can carry. The bus assembly could be attached to fuel tanks or interstages for making ICBMs. The hard part about this is the visual explosion which if rendered entirely, would kill devices (I'm not a developer so I have no knowledge about this it's just my assumptions) so the solution would be a low-yield size explosion that would be smaller than a high-yield warhead but less resource intensive. I understand the ongoing development for career mode so I'd recommend to add this after career mode will be done or later if more important features/content is considered.