Don't know about news feeds, but if you follow devs/pubs, for example Square Enix, Steam will surface their new release to you at least in the landing topslot along with other recommendations. Right now I'm seeing Dissidia from Square and some One Piece game from Bamco on mine, because I follow those two.
They also send emails when followed pub releases a new game, similar to wishlist emails.
Hmm, well that's good to know. I guess I'd just like it in the activity feed, or some kind of section or filter to know vs. them just happening to exist at the top of the store. I also don't default steam to open to the store, but my activity feed.
I do like all of these ideas. Your other ones were good too, but these caught my attention the most. The desired pricing one would be fantastic.
Overall, I really haven't had any issues with Steam though. Anything I could think of would be minor QoL upgrades. I find it easy enough to find games and sales.
I would assume maybe the desiring pricing might put off devs that would think it would further devalue their games, but at least I wouldn't use it that way. It's hard for me to find too many flaws with Steam, especially given they're already improving the interface, and I actually like that Steam sells most everything that's legal vs. other stores that more heavily curate. I also think it's inevitable for a digital game store to over time accumulate so many games, especially given PC doesn't have generations...that you need automated ways to learn about consumer taste so you can recommend older titles to them vs. just new stuff.