I came to post exactly what O-D-C said.  That's the PSP's biggest failure.  Full fledged experiences are for the sofa. 

I came to reiterate exactly what O-D-C and d21lewis said...

I hate cradling some portable for hours.

I think party games are not fitted in handhelds. A party game is better when you play together with a single screen.

@ O-D-C and co.

Most of DS owners play on their DSes at home or in the workplace, I think

ya but the games are;nt designed for that, their made to be enjoyed on the go, thats why you will find multiple save points, short levels or the ability to go into 'sleep' mode on the portables

when playing sbcg4ap, it would look pretty weird if you were rolling on the bus's floor imo. :)

Two things that handhelds suck at:

- Broad gesture motion control (tilt is fine).

- Local multiplayer, because everybody needs their own device and their own copy of the game.

I think if they add the stick on the right side, it becomes awkward to hold the DS since you need grip on the buttons side.

If you move the buttons up, it becomes too close to the R button and probably give you cramp real fast and the bottom right corner will be stabbing into your palm.

If you move it down, it's too far from the R button and you lose the grip since it's no longer touching your palm for support.

Unless they change the shape/size of the layout, it doesn' look like simply adding a second stick would make it comfortable.

All the implementations I've tried have sucked. Here, have a single level to play!

It's a good idea, but either the tech isn't up to task (not enough memory), or the publishers only want your freeloading friends to get a little taste. Even with a good implementation, getting each player a DS is more expensive than getting each player a controller.

Correction: It needs a mouse and Keyboard.

You're Welcome. :)