The lack of an answer to this question is leading me to guess there isn't yet a formal list of proposed DACs? A Canonizer.com survey topic would be one possible way of crowd sourcing and brain storming such a list. Anyone could start a new camp for any proposed DAC. Everyone supporting such could help wiki it. Everyone could then support the camps in the order of importance relative to all other DACs, giving a quantitative relative ranking of interest in each.
Each camp could concisely describe the design of their DAC. If any diversity of opinion showed up about the design of any camp, this diversity of opinion could be pushed to lower level supporting sub camps, where the amount of interest in each different opinion could be quantitatively tracked. That would avoid the destruction of support for the DAC, due to any differences of opinion on the specs of each DAC.
We could create a super camp for DACs people thought should adhere to the angel share / photosphere contract you just described. That super camp could concisely describe the contract. That way all DACS willing to support such could be listed as supporting sub camps of that super camp. If someone wanted to create a DAC that didn't support the contract, they could add this as a sibling / competitor to this contract supper camp, indicating such. In that way, if anyone thought the same DAC should adhere to that contract, they could 'fork' the camp, one being under (in a supporting position to) the contract supper camp, and one not. This would provide a quantitative measure of how much support there was for both, relative to all other camps.