Fair enough. Though I'm not sure I'm convinced that, today, you're not just better off putting a GPS receiver in the camera. GPS is a bit hard on battery life but with the bigger batteries in these cameras, I'm not sure that's much of an issue. (And of course you can turn it off.)
Depends. MILCs are generally pretty hard on battery and keeping a constant GPS lock would exacerbate their generally poor "active standby" (camera turned on with the viewfinder or LCD active) battery life. On the other hand, my smartphone, using both GPS and augmented network location services can instead very quickly acquire a lock when needed with minimal battery usage only when needed. And it also has a way larger battery, and the system is generally more optimized.
