The brightest future I can imagine is one where the institutions in place do not hinder the successes, growth, or progression of marginalized groups of people. I imagine opportunities for all people to fulfill their dreams and desires, resources for them to achieve these goals, and support systems to encourage and allow for the work to happen. Ideally, large powers would think more about how they can use what they have in order to solve problems rather than maintaining what works just for them. This bright future would also entail people never having to worry that they might lose access to their basic needs like food, water, medical care, shelter, good education, and a place to sleep.
