You never know if a project is a scam until they reveal themselves as a scam, I suppose. That logic could be applied to many many projects out there.
Impressive suggestion,,, so you want to say that we should wait until investors got scammed

. You could say directly that we should give you some extra time to collect investors fund. I think it's better to inform everyone before they click on their BTC wallet send button to make investment in hope of good return but actually receiving wallet address owner is ready to get vanish on the air with raising fund.