I wouldn`t recommend to invest in ICOs nowadays, as this sphere need serious filter and regulations, rather then current outlaw situation.
Also, 83% of ICOs go lower then their ICO price..
Tells pretty much imho..
These factors are important but in this current market about which the OP is asking I will suggest that we also have to look that how much the project have the potential in the future business. We also have to look that how much will be the demand of the product which the project will present after the ICO.