4 Long term use. Coin, token, system no matter what the ICO or release is it needs to have long term useful value. Just releasing currency for the sake of it doesnt cut it. Whatever the asset is, it has to provide some real use in order for market to see long term value in it. This means when one sees coin always make sure to think ahead how could such asset provide value to certain people, organizations, companies etc...
For example it could provide platform for developers to develop other blockchain softwares on top of it, which gives it intrensic value of whole ecosystem build on top of it, it could provide capital flight in reppresed countries such as privacy coins allow, it could be distributed power sharing and use such as certain coins that distribute computer power might allow in future, it needs to give value to certain market.