At the time you develop interest with an ICO, it would be prudent to take a look at their present stage of development. Essentially, a good roadmap should give detailed expectations of the project from the beginning to the end. A beta version would allow potential investors to interact with the project before making up their minds.
Whitepapers and proof of concept are good indicators of success. And because each step of the project calls for a predetermined amount of funding, token distribution should be linked to the roadmap. This is a good proof of transparency and accountability. A substantial share of the raised funds should be allocated to development related works, as opposed to bounties and founder members.
To launch a successful ICO, Do you want to develop own ICO? please visit Crypto code UK and develop iCO