It's a pity how Nintendo's money pinching hampers their product - though at least they substituted the tablet's analog nubs for proper sticks with clickable buttons.
No arguing with you on the resistive screen (and the LCD panel is hardly going to be a quality IPS screen either - the dimming witnessed during the presentation when the pad was held at an angle to the camera speaks as much), and same about the battery too. Yes, it's disappointing.
HOWEVER, that said, fixing all of those things; capacitive screen, big battery, and IPS LCD, it would probably have driven up the price of the wuupad too high. This is meant to be an affordable consumer device, not a luxury item like an iPad or the like. Compromises have to be made, until the general advancement of tech allows these things at the desired price level, by which time new advances will have been made that we all can gripe about not being included in a future "Wuu 2" console...
And, it's not as if pennypinching is solely a Nintendo shortcoming. Pennypinching cost Microsoft over a billion dollars this generation alone...
You may also recall original Xbox sparking power plugs and fire-prone power supplies, and the weak-ish GPU in the PS3 was entriely a cost-cutting measure when the rest of the hardware turned out to be so damn expensive.
I'm sure we can find cost-cutting things to criticize both orbis and durango for, once specs leak/are released, such is the nature of any piece of hardware built to a budget.