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?
While all areas could benefit in terms of stability and ease of development from standadization, the whole system and each area would suffer in terms of creativity. There needs to be a balance. However, if I had to choose one thing, I’d say the package management. At the moment we have deb, rpm, pacman, flatpak, snap (the latter probably should not be considered as the server side is proprietary) and more from some niche distros. This makes is very difficult for small developers to offer their work to all/most users. Otherwise, I think it is a blessing having so many DEs, APIs, etc.