WiFi issues?
According to reports there were 570 WiFi base stations in the room.
That's a pretty extreme case for any phone, are you saying that another phone on the market would have done any better? Evidence?
As for video calling, I don't think any consumers actually give two hoots about it, but I notice that all of the people who were posting those "Ha! The iPhone has no front-facing camera, so no video calling - EPIC FAIL" posts have now vanished.
So, the new phone now plugs some of the other perceived gaps in capability:
Screen resolution. All those with the various Android HD screens have to shift to a different position, from the early comments it looks like the latest stick to beat Apple with with be "Ha! They've chosen the wrong technology!"
Multi-tasking. The shift has already started with this one, the argument goes "Ha! It's not TRUE multi-tasking, the application has to register for events and then go to sleep; it isn't really running.". That's a bit of a lame argument, that's how well-behaved programs behave in other operating systems anyway.
Battery life. Better than previous iPhones, but I can't see the arguments changing much here; there are two camps, those who go through three or four batteries every single day and therefore need a swappable battery and those who would complain even if the battery lasted for six weeks of continuous talking because it's an Apple device.
Camera. 5-Meg instead of some bleeding edge 14-Meg thing. Cue a round of pointless megapixel willie waving. Apple claim to have gone for quality rather than stats and I'm inclined to believe them, the photo industry has known this for a while, it's just taking a bit longer for some consumers to grow up a bit and learn a bit about optics. I have a four year old 7MP camera that produces better images than a lot of current 10+MP cameras because it has a good sensor and a good lens.