Nuclear spoils is still somewhat new, but I know people are enjoying that style of gameplay. I have an idea about mixing this gameplay with our usual spoils games.
My idea is to add a color to the standard red green and blue, and designate the new color (black? orange?) as nuclear spoils. Spoils would still be turned in the same way as they have been: either 3 of a color, or 1 of 3 different colors to turn in a set. But when you turn in 3 of the nuclear color, you would only get to nuke the territories of the spoils...you get no additional troops. When you would turn in 3 different colors, including the nuclear color, you would still get the troops for it (10 in flat rate spoils) as well as nuking whatever territory your nuclear spoil is.
I think this idea is a logical next step for those who have liked the addition of nuclear spoils, as I have.