As a friendly request, I'd love to be able to use up and down keys to seek one minute forward or backward during playback, like with mpv. I play a lot of mixes that are an hour or longer in length, so this functionality would be a nice-to-have. I'll likely submit this idea to GitHub, anyhow.
To share some honest criticism, I was disappointed to discover built-in telemetry. Although it can be disabled with a flag, I dislike how it's enabled by default and unknown to the user unless one specifies the -h flag. I don't understand why user diagnostics data is needed from a console music player. Make this anti-feature opt-in and instead rely primarily on bug reports, or make the user aware of this telemetry upon initial invocation and provide instructions on how to disable it. Constructively, know your audience.
But overall, thank you to all the maintainers for this cool software!