What developments in the Linux world are you looking forward to the most?

Functional fractional scaling on GNOME.

I moved to a 4k monitor and could never get an experience I was happy with, had to move back to Windows. I could use it at 150% scaling and get blurry apps, or 200% scaling and get no screen space.

Now, most programs did work fine or I could tolerate them (I don't care if Spotify is a bit blurry). But gaming was just bad, GNOME told the games a fake resolution and then rescaled them, so they looked awful. The best solution I found was using a Python script to disable scaling before launching a game, but it was clunky at best.

Now, the new fractional scaling extensions did add the ability to have the app handle scaling by itself, so I'm really just waiting for an option to disable scaling for X11 programs or for Gamescope to add a "tell the compositor I will handle scaling but then don't do anything" option so I can actually get full resolution for my games.

I'm also waiting for variable refresh rate, but I can live without that as GNOME Wayland doesn't really get tearing ever.