I think a community is very important in a project success because if the community does not believe in the project, then the project cannot succeed because it it what the community say about the project that will attract another investor to it but if not, then the otherwise will be the case. I also think the community is needed because this are the people who will help to promote and market the project for it to be well know and accepted.
Yeah. It's the most important part for the success of an ICO. Right now, my interests are on menlo.one their platform called "Townhall" is designed to cater a community within their platform where communications can take place while people are rewarded for valuable contributions.