We aim to identify key factors for software ecosystem improvement based on community opinion. These key factors were defined based on a literature review. The questionnaire has two parts. In part 1, considering KDE ecosystem, please select key factors that you consider to contain practices that facilitate the improvement of a software ecosystem. In part 2, considering KDE ecosystem, please analyze the graph and choose the weight among the relationships of the key factors. The results of this survey will be used in an evaluation study of Software Ecosystems Practice Improvement. Your opinion is very important to the success of our research. All information you provide will be kept confidential.