There will be a lot of complaints after people invest for 50% and get 10% instead, you should entirely remove the 50% and make it only say 10% first week. Nobody will invest later if it starts 7500 coin / btc for the first few minutes then 5500, then 3000 in the end.. There's nothing stopping you from making the btc address available for a few or one big private investor getting all of the 50% bonus and the rest get 10% just minutes after that..and the 2 block rule is honestly bullshit.. I too wanted to invest a few btcs but this is pretty much dead on arrival. Basically the ones who got it at 50% instadump, start the chain reaction and everybody will lose big time except those few ppl at 50%. If you wanna make it fair, either lower the bonus to max 10% and make it a whole 24hours or remove all tiers and make it a fix sum for all the 8 weeks.
After today's debacle, and with so many people, probably the majority complaining about the 50% bonus. I think the Decent team should consider, despite the venom today, cancel the ICO, and inform everyone that they will modify the bonus and make it more balanced. Communicate the reasons for the change, through email, twitter, Facebook. So that everyone could be inform. And make the new ICO perhaps the following Saturday, so that people can plan their week and be available.