Thanks for the response. Happily to oblige with my opinion.
I understand the difficulty of working with any other platform and SmartThings is just one of many contending for this emerging market; so, although SmartThings is my chosen HA platform controller, a more neutral partner makes sense. In that regard, IFTTT seems like a good choice at this juncture.
Using IFTTT to activate/deactivate the sync module (essentially the entire Blink system for most people) is of little-to-no value to me. If you did nothing more than extend that to individual cameras, that would be of tremendous value.
I can't quite envision what Blink would do with geofencing so I can't comment intelligently. But geofencing has been really challenging so I could see that being a rat-hole for Blink. With a lot of effort, I now have a good geofencing solution with SmartThings that I don't want to have to re-create with any platform. Most people seem happy enough with IFTTT geofencing so I would commend that integration to Blink. To answer your question directly, yes, camera control is way higher than geofencing in my priority list.