The one that I really feel a need for a "sonic upgrade" is The Body and Soul of Freddie Hubbard. I only have that on an older LP, and although I think that Wayne might have over written the orchestrations, but maybe not?
Past that, other than Ready For Freddie, I think Freddie was far more effective as a sideman than as a leader until CTI more or less showed him that people liked it when he did that. Then, for better and/or worse, he stopped diddling around as a leader
Bonus points for Breaking Point, but the story about that band playing that music live and clearing the house in one set and Freddie pulling the plug on THAT right then and there speaks volumes, imo I think to be a real leader, you have to defy people to not like you, not hope that they will like you. Courage of your convictions, maybe?
A great player though, undoubtedly. But these records are not really the meat of his legacy, imo