As long as your definition of a "fully autonoumous" robot consists of something on the order of simply finding a game piece and kicking it in the direction of a goal you at least have a chance to be succesful. Many of this year's and previous year's robots already do that in autonomous, no big deal to run it for an additional 2 minutes.
However, don't expect your robot to do very well in competition. A game designed for competely autonoumous robots like FIRST TECH CHALLENGE or FIRST LEGO LEAGUE is much simpler than the games FIRST designs for their top level of competition.
Remember that you are part of an alliance. Your inability to co-operate with your teammates to maximize each robot's potential would be the equivelent of a football player running whatever play he feels like without co-operating with the rest of the team. Don't expect it to work very well.
Using this year's game for an example, how do you in intend to determine whether your robot should be going after a ball or blocking an opposing robot? How do you decide when to come over the bump into the front zone and assist in scoring? How do you decide when to come over the bump into the front zone and block the opposing alliance's blocker bot so your striker can score? How do you know if your alliance partner has moved to the middle and you need to move to the far zone to clear balls from it? If you do decide to block an opposing robot, how do you know it's not dead and you're wasting your time on it? How do you know that your alliance's striker bot is broken down and you need to move forward and score? How do you know both your alliance mates are on their back and you need to flip one back upright to have a chance to get past their blocker bot and score (this happened to us in the semi-finals, we won the game 2-1:
http://www.thebluealliance.net/tbatv...2010la_sf2m2)?
These are just some of the decisions I've made as field coach on our team this year. They're all pretty straight forward and simple, but impossible to make without an overview of the game situation. I'd be interested to hear how you intend to implement any kind of awareness of the tactical situation into your robot. You can pre-program a game plan into it, but without an overall awareness of the game, you'll discover the truth of an old saying that's proven itself through the years: "No plan survives contact with the enemy".
I think it's great to inspire people to work towards fully autonomous robots, just don't lose sight of reality. Many of your teammates will probably want to do at least reasonably well at their competions. In the real world, your robot will be a liability to it's alliance.