I think the fact you need the Bitshares platfrom to invest in your ICO is standing in your way to a broader participation.
In its current state it simply sucks. Slow and a not very userfriendly interace.
Also, the fact that you are threatening investors they might need to disclose their personal information (KYC policy) will scare even more people away from your project.

I like the idea and your sharing model a lot, will consider investing... Without the two barriers I mentioned it would be a no brainer.