The diversity of Linux distributions is one of its strengths, but it can also be challenging for app and game development. Where do we need more standards? For example, package management, graphics APIs, or other aspects of the ecosystem? Would such increased standards encourage broader adoption of the Linux ecosystem by developers?
Where app data is stored.
~/.local
~/.config
~/.var
~/.appname
Sometimes more than one place for the same program
Pick one and stop cluttering my home directory
This would also be nice for atomic distros, application space and system space could be separated in more cases.