The most serious implication is your day of reckoning will come if you didn't issue/sell your coins in a legal, compliant and ethical way as deemed by the SEC. Roughly these past and present issuers will be scrutinized and face serious consequences if they didn't. Best for ICO issuers to stick to regulatory practices in line with accredited investor raises. Currently ICOs shouldn't be issued to unaccredited investors but I have a feeling the legality of that will change soon enough .