The phrase "constructive role" means to play a helpful and positive part in a situation or task. It involves doing or saying things that contribute to progress, improvement, or solving problems instead of causing harm or hindrance. Full definition
She concludes by noting hints that the oil powers appear to be shifting these days to a more constructive role. (dotearth.blogs.nytimes.com)
This is the only way to regain its positive and constructive role for the global effort to tackle climate change. (climatenetwork.org)
Nonetheless, given today's «anything goes» liberalism of the arts establishment, one wonders what sort of constructive role remains for «found objects» and the like. (visual-arts-cork.com)