Comment by PeterZaitsev

One thing I would be careful with is non-voting members in LLC can still take you to court and it is the great question whenever courts can see you being good Open Source citizen as someone who does not act in the interest of shareholders.

The good option I've seen which allows to grant some commercial interests to folks without letting them to interfere with shareholder rights is Phantom Shares or creating a separate company (SPV) where everyone has shares and which by operating agreement is voting as the founder, in this case it makes it harder for them to mess with your company.

In any case, be very mindful of lawyers you choose, many of them would operate with default assumptions which in US often means C-Corp in Delaware, designed to raise some venture capital and hence protect such investors, if your goals are different - make sure to talk them through.