I really dislike when existing franchises are used to show off the latest gimmick in an effort to force people to embrace it. "You say you're not interested in our new gimmick? How dare you, we'll stuff it into your favorite game series so you'll have no choice!" That's what new IP are for.
I remember getting so pissed off with Killzone 3 because you had to waggle the bloody controller and turn it like a wheel in certain places. That's not the reason I'm playing a first person shooter. Annoying me with forced usage of your gimmick is NOT endearing that gimmick to me, it's making me hate it more.
As for Skyward Sword, it's probably the reason I didn't buy a Wii. I was on the edge of buying one already because of some of the Japanese RPGs it (finally) got. All it really needed was Zelda to tip the scales. Then I watched some videos of Skyward Sword, including from a Nintendo fanboy reporter, and I was out. I remember watching him trying to play it at E3 and how confused he looked, like he was trying to force himself to like it despite clearly not enjoying the experience. I'm not saying the game wasn't good but my own interest evaporated quickly.