I like your idea, and I'm sure there are many other users who feel the same way. If you want Spotify to see your idea and have other people vote on it, you should post it to the Idea Exchange section. From there users can comment and vote on your suggestion. I think you could get a lot of support, I'd vote for it!
I know for sure the explicit tag shows in the playlsit view inside of the app, but it doesn't show on the lock screen. I am not sure Apple has an API for that in iOS yet so app developers can take advantage of it.
MattSudaRock Star 24
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