Same old, same old. For the benefit of those that think 27" wheels are SO much better
The Butcher looks pretty much like a Heckler with a different suspension design, so the biggest difference between a medium and large will be the extended wheelbase (which isn't bad for stability at speed)...
If money was no object.....
Probably not too different to what you could get someone like NS Dymanics to achieve if you knew what you wanted.
He obviously has the added advantage of having a suspension tech rebuilding stuff (and a few spare shocks with a few different tunes) to work with.
No patent to deal with on four-bar now
"FSR" patent (which $pecialized bought from Horst-link) has now expired I believe - that's why every man and their dog are now using it (especially in the US where the big-$ would have fought tooth and nail to prevent them previously).
Other than your BB height and a slight alteration to your trail figure, it won't really affect any of your geometry.
I'd be surprised if most people could even tell the difference, other than some extra pedal strikes here and there.