Right now, I have a compelling design for this game. It has a lot of "technical" challenges for the Players and is pretty SOLID as a "concept" alone.
What I mean is that I don't YET have a prototype to PLAYTEST the game. So all of the though has been put into the "concept" and I LIKE the overall outcome of this mental exercise.
It has "tight" mechanics and makes sense as a "whole" too.