I'm finding Up Next as it currently stands a bit of a waste. I still think the closest (and not that close!) replacement of the old "On the Go" is a new station with settings of:
- Play [Order] to "Manual"
- Unplayed Only to On.
- Group by Podcast turned off. (This means you see individual episodes, not whole podcasts.)
- Include / Episodes / All.
You can then edit that new playlist to drag and drop in the order you want. It's still clunky, but at least it doesn't make you "lose all your work" in the way that Up Next seems to.
Somewhat to my surprise, you can also rearrange the order in this station while it's playing. For example, you start an episode in the middle of the station/playlist: "Up Next" will then just display all the items below it. But then if you go into the station and edit (which you can't do from Up Next, I think), and move the currently playing episode to the top, then the Up Next list will also change accordingly. (Odd - I don't think it did that with 9.0.0, and instead you had to stop playing and resume to "reset" Up Next; maybe I missed it, or maybe the 9.0.2 update at least improved something.)