I think Open Philanthropy has done some of this. For example:
The Open Philanthropy technical reports I’ve relied on have had significant external expert review. Machine learning researchers reviewed Bio Anchors; neuroscientists reviewed Brain Computation; economists reviewed Explosive Growth; academics focused on relevant topics in uncertainty and/or probability reviewed Semi-informative Priors.2 (Some of these reviews had significant points of disagreement, but none of these points seemed to be cases where the reports contradicted a clear consensus of experts or literature.)
I think Open Philanthropy has done some of this. For example:
https://forum.effectivealtruism.org/posts/7JxsXYDuqnKMqa6Eq/ai-timelines-where-the-arguments-and-the-experts-stand