While a detachable EVF wouldn't surprise me, and is most likely, a true hybrid E/OVF would be awesome. I would love to have EVF capabilities like peak focusing without giving up my OVF. Being able to switch between the two with the push of a button would be entirely doable but would take some very clever engineering. What would be really nice would be the integration of HUD tech in the OVF. You could have peak focusing, shadow/hi light clip warnings, etc. while still using an EVF. Only thing you would be missing would be a magnifying feature, but with accurate peak focusing I wouldn't care. I'd buy a new body asap for that.