I'd like to see a feature where you can share songs with friends within your Spotify network. I know there is already a feature to send a song through Messenger, Twitter, etc. but what about specifically friends you follow/followed-by on Spotify? It'd be great to log in and see a playlist of songs "recommended by friends", similar to the Discover Weekly, or to have an easy way to send a new song to friends and allow them to listen their "recommended queue" conveniently whenever they log-in. Then eventually, maybe a comments or "like" feature that let's your friend tell you they liked your recommendation and/or score your abilities.
Updated on 2018-01-07
A similar idea has already been suggested here:
It has been discussed within the Spotify Team in charge and it has sadly been decided that this idea will not be implemented any time soon. However, Spotify will revisit those idea topics from time to time, so hopefully it will be implemented in the future. 😉