Here's my idea. BTW, if somone already posted this idea, sorry, I kinda didn't read the entire five pages!
If you want the GP2X to be at the level of handhelds today (e.g. Nintendo DS, GBA/GBA SP, PSP), first you need to distibute the product to retail stores close to home! In other words, if you can get your GP2X in a nearby Best Buy, or Target, you'd be going to thge hardware store to buy a wheelbarrow since all the money you'd get wouldn't fit in your wallet!
Now, since no boxed games are being sold for the GP2X, what you could do is set up Download Stations at several Best Buy, Target, or other electronics/gaming stores! For example: a computer with the GP2X File Archive (or several comps) open on the main page, a card reader, or USB connector, and the customer's GP2X! So, let's say someone got a GP2X at that Best Buy store where those download centers were. They could buy the GP2X, open the box, do the whole screen thingamajiggy, and then mosey on down to the download centers! This way, they walk out with a game! Who knows, maybe they walk out with 50 roms (okay maybe not that much) and a SEGA Genesis emulator! This would beat the PSP and the DS by ten miles of gaming goodness!
The AD on top of the computer: never have to buy games for your handheld again! Get the GP2X, then get games from this Download Center! What are you waiting for!
Tell me that wouldn't be cool! Why have to spend an extra 20 or 30 when you can just spend the 200, then get tons of games from the archive, for the price of 0, zip, nada, zeroth!
Of course, besides this, you'd need to get the maintream magazines and companies to take interest in it, review it, promote it, sell it with the 2 commercial games whose release date is TBA, etc. But, if you don't get it into retail shops, especially here in North America, don't look forward to having big pockets like the guys at Nintendo and Sony do!