[r2davis2]

This idea has definitely come up in 294's discussions, the fear however is that you really need to get the full distance of the field to avoid your opponents stealing the tubes you've thrown, it will also be very hard to actually build this successfully. But the biggest issue we came up with is that unless you are able to launch at-least 3/4ths of the field you can probably count on a few human players being able to match your distance.

That being said, I do really like this idea from the stand point of a well-built alliance, and would definitely prototype it a little to make sure it is reasonably feasible.