Thanks for the input (and the link). Yes, perhaps I did not highlight the downsides enough. Most ICOs will fail. Most. A lot of people will lose a lot. I have already seen my Titanium fail outright, and Envion stall to a halt because of internal legal issues. I ditched Electroneum because of their pathetic management and I readily acknowledge that some of my others are long-shots and will quite probably also fail.

For me ICOs optimise the high risk/high reward type of assets that I like to invest some of my funds in. I would certainly not recommend holding a mainly new ICO based crypto portfolio! But as a strong proponent of crypto diversification, I think that investing in a carefully selected ICO or two is very good for a crypto investor, even if it only teaches you what not to do next time!