[Al Skierkiewicz]

It is hard for me to make a decision on the drawing alone. The first thing I would question is whether this design allows for the 1" limit for hard parts in the bumper here...
N. “Hard” parts of the BUMPER (i.e. plywood backing, fastening system, and clamping angles) may extend up to a maximum of one inch beyond the FRAME PERIMETER. “Soft” parts of the BUMPERS (i.e. pool noodles and cloth covering) may extend up to 3½ inches beyond the FRAME PERIMETER.

The second would be the method of attachment as it applies here...
I. BUMPERS must attach to the FRAME PERIMETER of the ROBOT with a rigid fastening system to form a tight, robust connection to the main structure/frame (e.g. not attached with Velcro). The attachment system must be designed to withstand vigorous game play – nut and bolt fasteners are recommended. All removable fasteners (e.g. bolts, locking pins, pip-pins, etc.) will be considered part of the BUMPERS.

The third would be to check that the support structure is in fact entirely within the bumper zone.

And finally a quick check of the various Team Updates and Q&A responses pertaining to sizing, FRAME PERIMETER, and frame structure.

I am not sure that your design would pass the test on all of these.