For what I´ve heard Iconomi spent shitloads of money on US lawyers to clearify things. That and that fact that still none of the exchanges have reacted with delisting (which may all have good lawyers themselves) makes me believe that the SEC stuff is a non-issue, especially for tokens that were issued and sold prior the SEC report.
If it´s an issue in future anyway, there will be SEC compliant exchanges like
https://bravenewcoin.com/news/overstock-announces-cryptosecurity-exchange-and-worlds-first-crypto-bond/In my opinion it would be very positive and likely that US people could finally participate
Yeah, I'm fairly convinced it's a non-issue too. People are talking about it as if it's a terrible thing that we need to avoid at all costs.
It's not something that puts a black mark on ICN (or any other token that might be a security). I think the main issue is that ICOs currently represent a space where a company can potentially sell "securities" worldwide, without the hassle of dealing with the SEC in the US. That doesn't mean the tokens are doomed or anything. Just that future projects need to be careful with regards to the US, or actually fork out the money to register with the SEC (and wait for approval), if they want to enter the US market (which Iconomi already knew, and have prepared for)