With ICOs you also need to be critical about their asking price. There are ICOs asking for tens of millions of dollars when they could do with less, a lot less. Some ask for reasonable amounts, others take whatever is thrown at them.
What will the team behind the ICO do if all their tokens are not sold? Will they pocket the rest of the tokens or will they burn them, making your investment more valuable?
Yes very true, to be honest I could write another four of these, but I think I've concentrated on the questions that will blow away 95% of the ICO opportunities, leaving you with a 5% that's worth scrutinising further.
Cg