I would love to see the return of the "direct plug into wall" that was the original Express... Possibly something that looks like a wifi antenna with a USB port in the bottom section?
Yep. As a frequent traveler with the last gen, the new one wouldn't be as practical. Most hotels have a power socket on or just above the desk. Then I just plug in the wired internet and voila, hotspot for my rMBP, iPad and phone. The last thing I need is another cord to carry and the speed of N is way higher than a typical hotel connection so I guess I'll be using the current one indefinitely.
The 110V right-angle adapter someone posted a link to is cool, but um, most of the world uses 220V and a slew of different plug shapes. With my current AEX, I can use the UK/Australian/etc adapters as well as the US one it came. (In fact, the bulkier UK adapter is MUCH better than the US one for use as strain relief when plugged in!)
Nice thing about the old design, you could always add a cord to it if you wanted it away from a power outlet. But the new one loses this flexibility. Always a step backwards in design when you lose functionality like that with no good reason. Well, I guess the reason was to reduce manufacturing costs by giving it the same form factor as the Apple TV - good for Apple, I guess.
Having said that, I just purchased the current one for a friend's apartment and for that purpose, it works wonderfully!

But for those using it as a traveling hotspot I think the old design was better (with regards to power supply, obviously the newer specs are always faster!)
That's Apple now I guess, a company for the masses not the niches.