I would love to see an ostree-based (immutable) Debian for both stable and unstable.

Aside from that, my nitpicks aren't distro-oriented.

Release Cosmic DE Alpha…can’t wait!

NixOS

I love NixOS, but the documentation is terrible. Better documentation would go a long way to making it a more user-friendly platform.

A robust way to make an install script on arch Linux.

I would make Debian and Arch be deterministic like NixOS, but with a different language and less overhead. I really like the principle but the implementation is subpar.

NixOS

Mostly perfect in my opinion but it'd be nice if when they renamed options they didn't deprecate the old option names so old configs still worked

Bring back the old xpenguins and xsnow packages in Debian.

Devuan - A better installer like Calamares and stop using backports as default on ISO lol it's a pain to use Ceres from there

Siduction - They should use a bit more ISO's giving 2/3 instead of 5 options to make available more ISO's regularly, obsolete ISO that is updated yearly lmao

I'd love yearly Debian releases instead of just every 2 years.

I wish Gentoo would make important information like unmasking packages more easily accessible, like directly into the handbook itself so that I don't have to search how to do it every time I need to unmask a package (I always forget how to).

I also wish alpine Linux had an option to use glibc instead of musl