Nintendo's making a profit of $150 off every 3DS sold (and who knows how much off the Wii, which is based on 2001 technology), so I think they might be able to subsidize their next console's costs a little.The only thing i can say say is that we have to wait and see, hopefully nintendo will be able to implement this to the console. There still hope as i believe they can still change the hardware to make it possible (i hope so). But how will this affect the cost of the console, i don't know.
Considering how much we can expect the cost of hardware to fall over the next year, I don't think Nintendo would actually have that much trouble making the console powerful enough to support two, if not four tablets, as well as the TV, without driving the cost up exorbitantly high.