I have searched for an issue on Jira about this new feature but haven't found one so I'm writing it. I hope I'm not making a duplicate of an already existing bug...

The current "workflow" to add a release to a music collection from within the Android app right now is :

1. Look for a release OR scan the barcode of a CD/Vinyl/Tape
2. Click on the top icon to see the release on MusicBrainz website
3. On MusicBrainz website, click on the (rather small) "add to Collection" link (provided you are already logged in in your brower)

This could be far more easy if a button was provided directly within the app, on the release screen. (the same could be done for the personal tags as well)

The app has made huge improvments lately but this one would streamline its use even more !