Five Wheel System?

[LaserWorks]

I was just wondering if this would be a horrible idea for this year. I was gone for two night in a row so our Frame team shot it down and slaughter my idea. But Wondering if it's been done before.
Having a robot with wider like a four wheel system, but in the front have a angled front (Like a triangle) with an Omni-wheel.
Having the angled front would make it easier to slip past or even in some cases push other robots, and take lower any accident smashing stress that could occur on the front end of the robot.
Any information?
Thanks