Classic Nintendo fans don't really have an interest in a zombie killing game. Most Nintendo people are interested in platformers. Those are the games we like best. However, this is a good bundle to attract noncore Nintendo gamers to the system, and I think it'll do well.
It might also be an opportunity for those Nintendo fans who haven't bought a system to pick it up, even if it means an opportunity to make a little cash reselling ZombieU
I will wait for a New Super Mario Bros Wii U bundle or Mario Kart Wii U bundle.
It is more money. So no, most people waiting for a significant price drop will not take the plunge for this unless they want more over value.
The bundle is definitely a good deal, but is still not a justifiable price for some.
Many people value things very differently. For me, the value ratchets up exponentially with a Mario 3D release. Price might not be any obstacle when my must play game drops.
I think that they will gravitate towards it. Reason being, most people whom purchases the Wii U picked it up with the Pro Controller any way (those were hard to find in stock for awhile). Only question is, do people really want to play ZombiU (it sold ok, but only around 300k or so, so maybe they were able to break even on the development and marketing costs but it's highly unlikely that it was a notable financial success for Ubisoft).
As for your assumption that with a Mario 3D release, value will ratchet up, not really if you are talking about growing the install base. The early adopters are really the ones whom are rabidly anticipating a new 3D Mario but they mostly already own the console. For the rest of the market, at least outside of Japan, 3D Mario isn't all that big of a draw compared to new bundles that clearly saves the customer a few bucks. If you recall the 3DS's first year, the majority of the sales momentum came around the holiday season and it was due to the fact that there were ridiculously good deals on the bundles at all retailers during the few holiday months (these deals are effectively Nintendo's version of a further price drop since the retailers are able to provide heavy discounts due to them getting deals directly from Nintendo, that is how the retail channels work, unless they are having fire sales on stock which they simply are unable to move at all otherwise, which thankfully the 3DS didn't reach that level).