@suppoman: Not sure if 2018 will be a year of Cryptocurrency, but you bet it sure will be the Year of Blockchain.
One thing most likely going to happen in 2018 is cryptocurrencies getting regulated in most jurisdictions. If that happens not sure about your "tsunami of ICOs" prediction.
I agree cryptocurrencies cannot remain unregulated forever. And, if they are regulated hey days of ICOs are certainly over.