actually your technique is too much and I think it will be difficult to apply your technique as a whole because when making an ICO usually these investors will see from the concepts and MVPs that can help these investors to look ahead of this legitimate ICO or not. what is certain is that their project must be useful and have a selling price and the team behind the project must also be experienced.
No technique is always too much as long as you can at least use it to convince the investors from not being a victim of a scam. I want to believe though that anyone who is a smart investor will always know the essence of looking out for the team and digging that up seriously and until they are satisfied, then, they can check for a minimum viable product or at least a proof of concept before even deciding to go ahead to get other information in detail. These are the things I believe any team before launching an ICO and wanting it to become successful will always place great attention on.