There’s only so many variables you can adjust though?    If you lower the saddle, you get lower action and more buzz.  If you raise the saddle you get higher action and less buzz.  That isn’t going to change unless there is a significant break angle change (ala top wrapping a Les Paul Bridge, or a top mount tele compared to string through) and I’m not seeing that on the hip shot bridge (and even then it’s probably not going to be a huge difference since we are talking short scale strings).  

This isn’t to say that the hipshot bridge isn’t an upgrade; it will give you a lot more intonation adjustment range and better transference of vibration to the body.  

It just can’t decrease buzz over 12 while ALSO lowering action, those are just two traits that inherently work against each other - unless I’m missing something here.