If you wanna make a good start on listening feedback, as your post implies:
https://worldofwarcraft.com/en-us/news/23716421/development-update-a-message-to-the-wow-community
Then it should start with making TW overall more attractive. First, It was briefly attractive back when it was giving good experience even if it was a bug. Currently, its giving so little experience its not even funny. It’s way too inefficient, and it could very easly be fixed with a quick hotfix as opposed to waiting for 9.1.5. So revert the nerf or make it so you get about a level per dungeon which is reasonable because otherwise i have 0 reason to touch it on alts.
Second, make the rewards way more attractive for max levels. It doesn’t drop anima, and the gear is a joke since its below heroic dungeon level. If you want max levels to run it, make it so it gives better ilvl. Or make it upgradeable with timewalking badges(up to or just below M0 would be a decent start). It’s simply very underwhelming as a whole.
Third, while not needed, it could really help to add more dungeons to the pool because some interesting ones are out(Example: Grimrail, Steamvaults and Azjol nerub) and some very tedious or uninteresting ones (Grim batol, Arcatraz or Black Morass to name some) are part of the pool, and more variety would help.
It’s a shame, really. TW is a interesting feature, but its so unrewarding right now that its not worth the hassle.