Yes, the thing is huge in an area where I find printing to occur most often, after the butt.
An auto adjust would be ideal, otherwise, the buttons mounted lowered and farther back.
I'm not a fan of the cross-bolt and clamp-tightening (basically scaled down 1913 rail) format on a reciprocating slide. Then again, I'm not a big fan of the sandwiched plate systems that are out there, either, but multiple bosses milled to a specific footprint allows for both a lower mount and less, potential, forward/backwards movement if the footprint isn't milled tightly. I suspect it's not really an issue (in fact it hasn't really borne out to be one), but it's one of those things where I can't help but think it could happen.
FWIW - I would actually prefer it if someone came up with a footprint that actually uses some through bosses. In other words, you would have it milled down and have some posts sticking up and slide the optic over the posts and those posts would come up flush through the optic housing (even being visible from above). Ideally, this would be at all four corners of the optic. Then, a screw in between each set of posts, for four total, would be used to secure the optic. I doubt you could that format loose.