User blog comment:SpaceManiac888/Series 9 Sweepstake/@comment-979907-20170228044524/@comment-24393094-20170301142905

Last time, I had twenty nine people sign-up, hence meaning that there was a 72.5% chance that someone would win. As it turned out, nearly all of the robots that reached (or could reach) the grand final last series were assigned to a user. As long as we can get four or more other people sign-up, we shall be fine in my opinion.

Alternatively, we could: 1: Give some users one extra robot each depending on conditions permit. That way, fewer robots will be left unassigned. 2: Extend the deadline, so that more users have a chance to sign-up.

3: Try to attract some of the older users' attention, especially those that have left the Wiki for a significant period of time, in order for them to sign-up.

4: Automatically add some users who have voted in Arena in the last month or so, like Hogwild, Demon and RelicRaider. Adding those three would mean that we would almost hit the target of around 75% chance of a user winning the sweepstake.

5: Or, similar to what you have suggested, remove some of the robots that are unlikely to win. I am not 100% for this idea however, since some rank outsiders have progressed to the semi and grand-finals before, so we cannot really stereotype some robots as "bad" straight away in my opinion.