I'm with "Valdeck". Personally, I've found that I don't install thousands of apps every day like I might've when I first got my new phone. On the atrix I currently have, which came out at the end of Feb. 2011, there are only 2 gigs of app storage space. I looked recently, and I was using 1.1 GB of it. This is after a full YEAR of owning the phone already. Basically using only 50% of what I had available to me. And when I open my app drawer, I think "Wow, I have a lot of apps". I can't believe people use more than 2GB's worth of apps. I know what it is - it's got to be gaming. Games take up a -ton of space, guys. I have about 15-20 games on my device. Some of them are gigantic, others are just large. What Valdeck mentioned makes a lot of sense to me - I seriously doubt you play every game on your device - I'd be willing to bet you have installed a game that you never play anymore - it's been over 6 months since you last opened it - yet you still keep it.
I think that if you watch that kind of stuff, use Google+ instant upload for the photos (or dropbox), and use a music cloud service such as Google Music or one of the other options, you'll be just fine. And then you get fast AT&T LTE if a tower pops up near you while owning the phone. You also get delicious Tegra 3 yumminess (which believe me, is great coming from my Prime). Or, if you absolutely need more storage space on the device itself - opt for the international version!