As I understand correctly public sale will be on 29th otober on GBX exchange platform and you want to create same platform for ICOs like GBX?
While Iconiq and GBX both vet organizations to help raise the standard of quality in our space, Iconiq offers a decentralized vc accelerator program, to support and fund cutting edge organizations as they prepare to hold their token sale.
Iconiq labs are also accelerator so projects might not have much awareness currently so people know them. But I do like the pas projects they did already.