"I would like to see the gap diminish on all e-mail accounts. My hope is that the technology is there for that to happen."
I agree. This 15 min interval thing is disappointing. As I understood it, I thought people were using Blackberry email like SMS. If I would have known about the 15 minute interval when I was bying the device I might have stayed with a system where you can determine your own polling interval on the device itself.