Potentially, everyone on both tribes might submit a weapon of choice today, resulting in uneven representation in the IC. Since the number of weapons a tribe has in play may be significant, this would give DARKSHADE an advantage in today's game.
To compensate for this, IF I receive all nine WoC from DARKSHADE, I'll discard the last one received. I'll give the bearer credit for showing up, and you should not hold it against them that they showed up last, but their weapon will not be counted for purposes of resolving the challenge.
It does give DARKSHADE a little more breathing room than SIBLING, because theoretically one member of DARKSHADE's team could flake and there would be absolutely no consequences for their flakiness, whereas SIBLING really has to be on top of it to get every member of the tribe to contribute. But this slight advantage on DARKSHADE's part is completely nullifiable by a strong team effort on SIBLING's part and it simulates the competitive advantage of morale.
In future competitions I'll always discard the last WoC rec'd from the larger team in excess of the maximum possible submissions from the smaller team.