I know a strategy that Hero/Legendary did in signature campaign, they wait until last 2-3 weeks in the end of bounty campaign and join. Because of highest ranking member, their stakes for signature equal 5 - 10 times of others so that mean 5 - 10 weeks stakes of Jr. Member equal to only a week of Hero/Legendary Member. That help them participating in a lot of bounty and earn much money.
it's great strategy for high rank member, no one know will ICO scam, fail or not. So you shouldn't do a signature campaign for 2 3 months and then got scam. This strategy will reduce your chance of getting bounty scam.