Something it seems Valve has been working on for a while now, is an easy way to transfer game installs between PCs and Steam Deck.
We've known about it since at least October last year, where the SteamDB founder Pavel Djundik talked about it on Twitter. However, in a follow-up post on Twitter just recently, Djundik mentioned more work on this has appeared recently with strings appearing that say "This feature allows your PC to transfer game files to and from other PCs or Steam Decks on your local network, reducing your Internet traffic while downloading or updating a game" and also noting that you can "Can limit to own devices, friends, or any user.".
Once actually out it would mean you don't need to re-download on other systems, or use the Steam Backup feature (which doesn't always work right) along with some form of file syncing which I've done multiple guides on for Steam Deck including Warpinator, Syncthing and Filezilla FTP.
Sounds like an incredibly useful feature for Valve to add to Steam desktop and Steam Deck don't you think? Looking forward to giving that a test when it's available.
This and more was recently covered in my News Flip #2 video round-up.