I wonder I Apple will bring it back, assuming it used to be there.
Well, technically it cannot have been there as "there" was inside iTunes, and iTunes is no more. I'm not sure how that column view would work in TV anyway (What columns would be of value?).
Features come and features go. For example, I find the integration of macOS and iOS is much better in Catalina than it was in any previous version. I love that I can verify an action from my Watch instead of having to remember and type in a password. I like the handoff of messages from iPhone to my MBP. I find the integration of Photos to be a lot better than before. So, while some things may have gone, whatever they were I don't miss, and I like the things that came.
Kinda like my car. I used to use the ashtray for all sort of storage. But they don't put them in cars anymore, so I have to find another place. Fortunately, now they have cup holders, which I never had before, so that's a good thing. And I miss vent windows, but that's for another day and time...