Yes, that's what Cheapy D and Wombat would like. But what would the user community like? CAG is much larger than just the founders. If a CAG game were ever to be produced, I have no doubt that they would go to the community for feedback on what it should entail.
Personally, I'm not sold on a Tribes-esque CAG game. I don't think it fits the general theme of CAG. How would you work the CAG theme into it? Have each base be a store? I'm sure there are ways to work it in there, but it would be a bit of a stretch for the Tribes gameplay. I'm thinking something more along the lines of a puzzle or strategy game would be more appropriate to cheap ass gaming.