Just tried the new Roku app. One key missing feature is the inability to change accounts or to switch accounts automatically when using Spotify connect from another device. This is important for a family. Just look at other Google Play apps and YouTube TV.
This is becoming increasingly frustrating of a missed feature. I am at work and want to listen to Spotify, my wife cannot easily change to her account thereby causing my music to stop. Spotify connect is unreliable for her from her phone because the Roku app is tied to my account. We log her in instead and then we have the reverse issue.