I couldn't agree more. This is from another post I made in a different thread, but it certainly belongs here too.
We need someone to come up with an addon. I'm showing 3 ideas below. The first two use the sync port and involve electronics and drivers, where the last one is a sort of d-pad extension.

I sold my Axim X5 and got a Sony Clie because of the GC10 game controller. It worked perfectly...but it was on Palm and the entertainment power was a lot lower. I sold it and got the Axim X30h.

On my first Palm III I used one of these babies. It wasn't perfect, a little chunky, but it did the job.

I've never used one, but I think this one looks perfect. It's for the Handspring, but that's all we need. Something small and easy to transport and hookup.
I figure it'd be easier to get someone to create an addon then it would be to return my Axim to buy something else. Besides, I already tried that and was disappointed. I don't want a GameBoy, I want a PDA that can do everything I want it to.
Mike