[Andy Baker]

I'll start:

Let teams use any shape of steel channel, angle, or shape. This would let designers use steel much like they currently use aluminum extrusions.

The reason for this is that some teams have access to steel shapes which are free to them.

For example, team 410 had to remove their entire ball collection system at the LA Regional last year because their main support structure was a steel C-channel. This form of steel was not legal in the FIRST rules, since it wasn't on the additional materials list nor was it in SPI.

Andy B.