IDK, it looks like they addressed my main complaint about GTA 5: unlikable characters. I wanted to like Franklin, and Trevor was at least initially interesting, but their arcs were just so disappointing.
This game has two protagonists, they seem to have some chemistry, and the brief hints of story seemed to have promise.
I'll was planning to not buy GTA VI due to the apparent focus on online recently, but I'll wait to see reviews to see if they make a more interesting SP experience than GTA V.