Smart contract is public, and it can veryfied. We don't need to provide the information about the development team when the product is ready and it will be validated.
Why not? 10 % for marketing + 0,25 % of sales but who will do the marketing and does that person know anything about marketing? People have to hear about the lottery in order for investors to make money. That's why it's important to know who is behind this. Also it doesn't look like you even have a basic website up about the lottery. Just an ICO site where you ask people for money, but not a demo of how it would work. Will there even be a website?