This is kinda similar to how I feel. I like touch controls, and I like the idea of streaming video, but they're gimmicks I'm not really interested in. I would prefer touch interface gimmicks be kept to the 3DS, and as neat as game streaming is the reality is I'll rarely use it (as in, TV being used, thus I play on the pad). Nice for others who do, pretty useless to me.
I expect uses to be mixed but, as a whole, gimmicky, as most games will not be built specifically for the Wii U. Even neat stuff like what IdeaMan suggest with Assassin's Creed 3 really aren't enough. Doesn't matter how neat or useful the gimmick is: it's not how the game was designed from the ground up, and it's not going to be enough to sell me on that port. I don't care about additional birds eye hunting cameras on the Wii U Pad when I can play the same game, minus the gimmick, just as effectively and significantly better looking on my PC.
But this goes hand in hand with my disinterest in the pad as a whole, because of how much I love the Wii remote. I was actually disappointed with the pad. Neat it may be, but unique it is not. It's an extension of the DS/3DS philosophy, now on a console. The actually controller itself is back peddling to pander to pad-only gamers who can't hack the sheer awesomeness of the Wii Remote, which is ultimately the superior, more original and unique control scheme. When I look at the Wii U pad I see a touch screen with a traditional controller attached to it. With the Wii Remote I see awesome motion controls, comfortable split controller design, and the incredible IR pointer.
In my head, I would have much preferred to see the Wii U simply refine the Wii Remote philosophy with stronger hardware. I wanted to see the Wii dream evolve, Nintendo and others taking the Wii remote to new levels. Given the NES->SNES and N64->GCN path of progress, I totally expected this to happen. Wii->Wii U. And yeah, it's backwards compatible, and a lot of games will still probably use the remotes, I just don't care about the pad.
This is especially true for what you said: it's an more expensive unit that will detract from hardware strength relative to sale price.