This paper proposes a new four steps methodology to manage innovation project during front-end phases. The objective is to identify major stakeholders' needs, to classify and evaluate them and finally to compare several innovative concepts according to their answer to the needs. Kano model is used for requirement assessment and classification within four categories. The main contribution of this research is represented by a systemic approach dedicated to the need identification tasks. Moreover a mathematical classification mode is suggested in order to achieve innovative concepts comparison. The method constitutes a decision aid tool for the selection of prior needs that have to be satisfied integrating the company strategy. The aim of this article is to describe the methodology, its theoretical background and some experimental results.