Have been using Tidal and it’s great! Lots of fun!
For the experience to be better, I think it would be cool to be able to mark as favorite 
a song that you just discovered and maybe haven’t marked before on your phone or PC.
Also, being able to add a song to a playlist or create playlists on the go, would be great!
Tidal does have an option to create playlist on-the-go either through the phone app or from a computer. I use Tidal with Serato and the playlist I create on-the-go appears on serato the next time I open Serato.
Sorry if I didn’t explain myself that well. I was referring to being able to create a playlist on-the-go will using the prime 4 alone.
Just using the prime 4 screen and having the option to “drag” or mark a new song that you just looked up during your mix or maybe because someone recommended it.
Yes that would be awesome. It is a current option in Serato. Also in Serato, I’m able to view my Tidal play history and drag it into a new “Crate” (i.e. playlist). Hopefully it’s something that Denon or Tidal may implement.
Now I’m suddenly wanting to use Serato again… 
That’s exactly what I’m thinking about! Would be great to just drag songs from play history into playlists or crates with the prime 4 alone. Hope they can sort it out!
I totally agree on this! I would love a way to add songs to a playlist while interacting with Tidal on the Prime 4.
do you know if this has been requested as a feature?