I agree with Andy in that you may think you've stopped learning but you haven't really. I've found that things I saw or was taught 6 months ago and dismissed for whatever reason all of a sudden I'm doing them and they are improving my dancing.
Also dancing the other role is fantastic fun but I've only done it with a lady leading. It really teaches a guy 1. How to spin properly and 2. what feels nice for the lady. Once you know whats nice then you can link moves smoothly together.
The other thing is it's not always doing workshops that help with ideas, just watching people dancing and seeing how they do moves that you already know. How is their posture etc and then trying it out and seeing what suits your style.
Of course the best place to improve is Camber!
