Cons:
More ram please.
Wireless charging please.
16gb base model on a $700-800 device? Pathetic.
More battery. Use LTE/3G and you've got a couple hours max. I'd take a mm thicker.
Pros:
Bigger screen (catch up)
More touch (doesn't need the 6).
Not very ground breaking.
Well wireless charging can't happen with a metal unibody.
Otherwise this is my cons.
Cons:
Giant bezels. I know this is because of the Touch ID sensor in the home button, but it didn't need to be THAT large.
Battery on 6 sucks at 1800mhz. Better on the 6+ at 2900, but still below the average.
1 GB memory. Don't open too many tabs on safari like previously or expect crashes. Especially if you want to do some web gaming.
Pricing. Ugh.
Weight. This this is a brick in your pocket.
Camera has not been upgraded really
Pros:
2 screen sizes finally to chose from and decent sizes too. Too bad the 6 is a bit gimped with the lesser resolution though.
NFC for payments seem cool
OIS stabilization for the camera finally, but only for the 6+.
Touch ID improvements
Rounded edges YAY!
Updates to the OS looks nice
Just seems a bit pricey really though for the specs so far.