I personally think the whole idea behind the Wii U is broken if we can't use multiple screen-controllers per system. So many opportunities will be wasted without that capability. I wonder what the reasoning is? Does the system not have the processing power required to display 4 lower-res screens at once (in addition to the TV)? If processing power is their only limitation, then, considering Nintendo's history of putting local multiplayer as one of their top priorities, it confuses me as to why they aren't fixing it. Surely the addition of enough processing power to run at least two tablets at once would be worth the cost, considering their usual emphasis on local multiplayer.
Sometimes, you confuse me Nintendo.