dAGGER:
yep, it might not be easy to implement this variant.
But, on the other hand it's "just" the implementation of the three-round-logic and the pieces-logic. As the rules of the game itself remain basically unchanged. But, I'm not a programmer.

The economical decision whether it's worth developing this game/variant in terms of potenzial no. of players etc. ... that has to be made by brainking. May be, Fencer strives this board and could simply leave a statement like "forget it guys,. Never ever!" or "great idea guys, please go ahead with the concept!".

Well, I wouldn't mind if we first start with the atomic or extinction version. But, honestly, if I understood the rules right, I'm not sure if this would fit with the basic concept behind the game espionage. In other words: these two variants won't have much in common with the original game dynamics/concepts. Feels more like a quick-shoot-version. This does not mean that I won't like it, ;-)