Is "welp, let's see how this sounds" when you're about to play an edgy lick something that remains a legitimate part of a solo even when you've reached mastery?  Or do you always know something is gonna shred correctly with the rest of the group right before you even play it?  Is jazz mastery partially about mind reading?
i'm not sure what mastery means, but i think you just want to spend a lot of time with the instrument and enjoy yourself, and keep taking risks, especially the fun risks