I'm not sure I can reproduce some of these complaints. Play next and add to queue are both there for me. What do you mean by "doesn't work any more"? I just opened it; it's definitely in need of a UX update but seems to work fine.
Maybe it's just the tvOS version that lacks the option I described? I was disappointed in Spotify on tvOS so I'm using Music there. I guess platform inconsistency is an another negative of Music.
And by "doesn't work" it just says "an error occured" and nothing helps. I've even reinstalled it. Judging by reddit posts about it, it's a common issue. (Its logs also provide 0 hints about the error it encounters.)
