I'll take both the WiFi and GPS. As I mentioned in another thread, "computing" is a whole different beast today than it was in fairly recent years past. With all of my current gear, I could definitely use both GPS and WiFi while out photographing birds and wildlife.
If I had the option, I'd set up my Lumia phone as a WiFi hotspot. I'd connect my Surface Pro tablet to my car for power, pop in an extra 128gb memory card, and join the Lumia wifi network along with my trusty 7D II with its fancy wifi and GPS. I'd write a Metro app that would wirelessly receive, archive, convert to JPEG, and (if I was within range of a cell tower), back up my photos to my SkyDrive (just for safe keeping)...all real-time as I'm shooting. Since this is WiFi, I could leave my tablet in the car, and so long as I'm within range for the wireless network to work, I could shoot all day long and never have to worry about my work getting lost, running out of space, etc. When I want to review my shots, rather than poking around on a piddly little 3.2" screen, I haul out my beautiful 10.6" 190ppi tablet and view my work in high def.
Ah, the wonders of modern technology.
Now, of course, if I'm way out in the boonies somewhere photographing an unholy-rare species of bird miles from any road...this ain't gonna work. I might instead bring along a Surface RT with its immense battery life, and just take that along with me, rather than leaving it in the car. I'd lose the real-time backup, but I'd still have that nice high-def preview capability, and 256gb of space (I rarely use more than about 64gb on any given shoot).
All the while, the camera is automatically tagging my GPS coordinates, so I don't have to spend inordinate HOURS
in post geocoding all of my photos...wow, I cannot express how much I hate post-process geocoding...
So...hell yeah! I'll take both, please!