The BitShares blockchain is very flexible. You can create regular ICO tokens or STO tokens. You have to follow the laws during the sales. For Example, if you create a BitShares UIA token, the admin can whitelist/blacklist, exclude trade pairs, freeze accounts and tokens and even withdraw tokens from a other account. As a result, a UIA token admin can structure the token due to their business case and create a regular ICO token or legal compliant STO token.