Not sure I agree. I've enjoyed how intentional SoundCloud's updates have been over the last few years without trying to do too much (like every music service ever). The changes have been subtle but useful for both power-users and casual listeners.

I think their approach to discovery needs some attention, but definitely wouldn't expect Twitter to be instrumental in helping with that.

I'm biased, as I'd hate to see anything ruin what I think is one of the best music services right now.