The one by me keeps changing, which is nice. Usually about once a year or so, they get something major done with the layout or flow, which is cool to see.
This store is a mall store, so it's long and narrow, with the Genius Bar along the far wall. I'd be surprised if that bar was more than 10ft wide, which limited the space to three customers at a time. In front of the Genius Bar was a big wood table, used for One-to-One training, which made the whole back of the store used to be a huge crowded mess.
Swung by there last night for a Genius Bar appointment and was surprised to see that they had put a new big wood table in the middle of the store, and had moved the One-to-One training there. No more kids play area. The Genius Bar is now using the old big training table for GB appointments (in addition to their original area). Looks like they can now handle 9 customers at a time, instead of 3. And with the training moved to the center of the store, the back of the store was way less crowded.
Neat to see big changes like that on a somewhat regular basis.
I'm not a fan of Apple Stores either. Just full of people doing nothing much in particular other than molesting the display models. My two experiences at the Genius Bar has lead me to believe that Apple employed morons who, despite me telling them exactly what the problem was and how it could be fixed, told me nothing but misinformation and both times encouraged me to buy something new (OS X Lion and an iPhone 4s respectively).
Saying that, the one I went to in New York during my short visit to the US was a very pleasant experience.
Not that the US Apple Stores are anywhere close to perfect, but it seems like there are a lot more complaints about Apple Stores from folks in the UK -- especially regarding the employees over there.