You seem to not understand that this effect happens with a lot of series, halo on xbox was 'sorta bundled' and people wanted it to 'play a new game on their new toy' and we all know how people hated that game. KS was considered a show piece title, it's also one of the best designed titles rare has ever done, filled with content, depth and charm all around, and the fact it was done so well on a brand new device is even more impressive. People who own KS on their kinects will not do so regretfully, they will probably be pretty interested in a sequel if it happened, because it's very good.
KS isn't some trash game that got some sales because people were desperate for games, there is a reason that the only good to great selling kinect games include DC and KS, their both spectacular games people will love if given the chance, and i'm sure sequels to both would do great. Just like halo
I'm a huge fan of rare, their n64 era hasn't aged near as gracefully as some seem to think, unlike some of nintendos classics during that era, only a few of rares titles really hold up well today. Looking through their n64 titles, you have banjo 1 which is still an amazing classic, diddy kong racing which is still great, tooie is pretty average, goldeneye and PD are primitive, horrible framerate, boring level design messes (and note, my name on this forum is inspired from goldeneye, I loved the game, it's not very good today). You also have jet force gemini and conker which hold up pretty well, but conker in particular is kind of a messy game by todays standards.
Really, stuff like dk64 and tooie were clusterfucks in game design, rares 2 legendary FPS of the era have not stood the test of time very well, they have some legacy left in titles like jet force, banjo, diddy kong racing, KI and DKC, but a lot of what people hold dear from them TODAY would actually not be very fun to play today by most people I think.
Viva pinata and KS are among the same quality as something like banjo kazooie, they may not be as good, but they have the same general quality of design, a concise vision, beautiful, stream lined enough gameplay, people give rares n64 titles too much slack while shitting on many of their excellent 360 titles.