i had a phone with gps built in, a blackberry 8130. I found the device could get a signal maybe a third of the time and lost it easily. I have a gps puck and had to go back to using it, i also use it now for my Touch. It's no big deal for me to use the puck - even though it does die my gps use down a little. Point is, built in gps isn't that awesome.
I'm on Alltel btw, but I really don't believe there is a push or movement for any updates to these phones. That's the downside of not having a BB. BB was always making them better. I still ike the Touch. It does far more than a BB though I can see that it is far away from being perfect. I've done a lot of research on these devices in general and so far no one has produced the perfect device. Even the flaunted iphone was found seriously lacking after its actual release. Not sure why no one wants to spend the money to make the perfect "notebook pc the size of a candy bar - with phone" but it will happen one day. Until then, use your phone for what you need and don't make such a big deal about needing more. The minute they do release Rev A someone will make a post asking for a Rev. B so the phone can do cartwheels or something else. Don't worry, be happy man