If ICO give a lot of information about it - it's good. If the workteam have good reputation - it's very good. As example - Komodo from developers BitcoinDark or ArcBlock ICO, when you can see strong team also.
I think that the main criterion is the speed and quality of the feedback. If the bounty team is working slow, for a long time does not answer, manager not calculating stakes - it will be bad project very often.