Hoping for playable Ciri (set after Witcher 3's Ciri becomes a Witcher ending) for this new Witcher series, or create-a-witcher would work too. Also hoping we get to see some new locations that haven't appeared in the games yet, always thought Kovir would be interesting to see.
Very interesting that they are dropping Red Engine in favor of Unreal 5, supposedly Red Engine was kind of tricky to develop for and was partially responsible for Cyberpunk's issues, so they are likely making the right call switching to a very easy to develop for engine like Unreal. Unreal 5 also has Quixel, a huge library of photogrammetry scanned texture assets for developers to use, which should speed things up vs CD Project texturing everything themselves. Hoping for a release in 2025, 2026 at the latest with Unreal 5 being used.