i agree.
things are getting better in the wireless department, and Air Express is a big step.
i hope, however, that the USB ports on these Airport devices will evolve to support more than just printers. i have several devices connected to my mac with a USB hub, so i cannot cut the USB cable yet. if i could share the USB hub over WiFi I'd be so happy. Bluetooth is too slow for synching when you have lots of data, and have to sync often.
also, if you could share a USB hard drive from a base station, that would permit a cheap NAS solution. granted, Airport Extreme is not very fast for data transfer, but i wouldn't care if it was just backing up my data when i'm asleep.