In the case for the success of a project it just can't be pinned on the development team as both the community behind it supporting it and the dev team both are responsible for the success for the project. Feedback from each other as in both the development team and community is beneficial in the success in the project and how effective it'll be in the market as with feedback in certain aspects would help before release and would obviously fortify it's chances of succeeding. So there is importance from both ends.