Maybe this has been suggested somewhere previously, so I apologize if I am repeating.
Taking 4 RI3D teams + 2 BuildBlitz teams, one could construct a
half-day two-hour tournament. Ten qualifying matches, then alliance selection and a double elimination Final. Even if this is not logistically feasible for the participating teams, I think the design competition should be based on this (or a better?) assumption about tournament structure, not just on the Game and Robot rules.
Math quiz: why ten qualifying matches? Apologies again if this one is too easy.

__________________
Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)