Guess I’ll start then 
- proper dotnet3 support (I’m likely to use this at work and don’t want to install windows)
- ~~add azure-cli support back to nixpkgs, the PR is mostly done: https://github.com/NixOS/nixpkgs/pull/71797~~ done
Also had a pipe dream for adding support for using “manylinux1” python wheels, Add support for PEP 513 "manylinux1" wheels · Issue #71935 · NixOS/nixpkgs · GitHub