Amazing to see this initiative to improve sustainable and fair popup funding! 
From ZuBerlin side we strongly support this and would be open to participate if it’s voted in.
As already brought up directly measuring impact for popups is hard, often time delayed, anecdotal and challenging to directly quantify. We appreciate attempts to do so but would also recommend being cautious with driving things too much towards primarily quantitative metrics.
Simply having the costs and breakdowns for popups is already helpful for the ecosystem as it improves planning ability and increases transparency.
Going forward a combination of automated / quantitative approaches and governance-based ones (individuals who can assess popups well) will likely be a good balance.
We are generally quite open and supportive of stepwise iteration with the suggested LLM-based approach here.
Thanks a lot to @nidiyia and all other contributors for pushing this forward! 