Let the hive mind of Engadget get that for you.
"I'm in the market for a new phone and money isn't a limitation. I'm also not partial to any particular US carrier, but here are some of the features I'd like to have: WiFi, GPS, good coverage in lots of places, push Gmail (a must!), physical keyboard (a must!), a touchscreen, decent battery life and a relatively slim body. And please, nothing that has a fruit logo on it. No offense to the fruit fans, though. Thanks!"
put two buttons on "upper" side of the screen and replace the phones direction pad with something more suitable for gaming(if it's the type that has a push button integrated, thats not a problem, thats how it was on ngage classic..) and you won't need the clunky add on device thats the size of the friggin phone.