I just went through my email archives looking for old protos that, AFIAK, never got passed, but look interesting. That list is here: https://docs.google.com/document/d/1fwkCVGpETexQtCkD3fxiP0jk5gtSQj0pDwxUXBmxhTA/edit# <https://docs.google.com/document/d/1fwkCVGpETexQtCkD3fxiP0jk5gtSQj0pDwxUXBmxhTA/edit#>
Feel free to propose any of these, or add to the list. At some point, I might set up a proposal competition and/or contract to incentivize revising some of these. Gaelan