[Nemo]

If somebody forced me to choose between mecanum and treads, I'd choose mecanum. Not because I think it would be good this year (I don't), but because treads are a bunch of extra work while mecanum can be quickly bought and assembled without any fancy design and fabrication.

It seems like an obvious 6WD kind of year to me. The climbing and frisbee pickup is so complicated and difficult that I wouldn't want to spend any precious time designing a drive system, unless it somehow tied into the climbing ability.

Strafing doesn't seem like much of a benefit this year. Like last year, you can pivot to aim your shot. I liked it in 2011 when strafing made it easier to score tubes.