[MrMon]

Again, lawyers. You avoid the securities question and can form an LLP, but you need a partnership agreement. One that allows for governance and doesn't require unanimous consent.

Also remember that partnerships are usually structed so that the partners are pretty equal. Doesn't have to be that way, but it's pretty unusual for one partner to hold 50% and 20 other people to hold the other 50%.

You probably want an LLC, with a limited number of stockholders. But you need to talk with someone who can structure the company to meet your goals. Something that can protect you if the company fails, something that allows you to operate it if it succeeds, and something that is ironclad in the case of immense success, in which case people will be all over you claiming they own a piece of it. Be able to prove they don't.

If you don't think hiring experts is worth it, your idea probably isn't worth pursuing.