Clicking on the app's tray icon while it's opened should minimize it to the tray.
The details/unsubscribe button on the subscriptions page are obnoxious. This could be solved by making the unsubscribe button smaller, or out of the way. Then making the entire podcast tile the same as the details button.
If the user has a queue from a previous listening session, and they re-open the app, it should bring them to the queue page, and not the home-page. This could be a toggleable option.
GTK integration! Now, this app being an electron app does remove some ability to integrate with the rest of the desktop. But that isn't to say that you shouldn't give an option to read the user's GTK preferences, and create a color-palette based on that. I'm saying you should do that. It'd be nice for seamless(ish) integration.
Make the queue bidirectonal. AntennaPod (an android podcast app) does a great job of this. See?:
Add a watch-history tab. Another feature from AntennaPod...
Add support for lightning network boosts. This' a longshot, I know. This requires a lot of upfront work on your part. Perhaps you could simply wrap or make calls to a cryptocurrency application that would allow for sending boosts?
CPod version: v1.27.1
Description: