Personally, I like it way more than 3. I could never get into the older games (including 3). Others say it’s a “reskin of 3” which I think is kind of ridiculous.
The story so far is actually pretty intriguing. I mean, it’s not mind-blowing, I’m pretty sure of what will happen, but it’s still good for a game in this genre.
Replayability is really endless, but, I don’t know if I’d say it has more replayability than the older games, it just may be more replayable for you if you like it more.
For any client that does not support ListenBrainz but does support Last.FM you can use multi-scrobbler to chain off of it. https://github.com/FoxxMD/multi-scrobbler