I think it's going to be less important in elims to be able to cross the bump. The strategy that I envision being played out doesn't involve any crossing of the sides more than once, though that requires coordinated and fully functional alliances.
That said, it's not too hard to make a frame capable of crossing the bump anyway without sacrificing much, if anything.
One of our ideas was two powered wheels on two supports connected at an angle. The idea is that you have a sensor rotate the wheels, and if done perfectly, you would barely even notice the bump. Switch them fast enough and you might even be able to drive full speed right through it, as if nothing even happened.
Just an idea.
http://gyazo.com/3bc93bbb13c500e9f7b...png?1326347340