Thanks for your efforts and for putting this together. This can go a long way for both Muslims and EA.
I think it would be interesting to see statistics on this. Some examples could be: What frequency of people suffer from nightmares? How do they rate it on an intensity scale? What's the proportion for whom nightmares affect their everyday living? Are there DALYs associated with nightmares (probably such data won't be available, but it could be interesting to explore)?The data might come from either current studies or from future ones that you/others might want to conduct.
Thank you. Yes, this is exactly what I referring to.
I can only address one of your points from question 1. Evidence Action has abandoned and completely started at least one of their interventions which proved to be ineffective in light of new evidence. If I remember correctly, it was in Bangladesh.