I'll agree with you partially on the "So You Think You Can Dance" possibility for a second season being good. "Rock Star: INXS" is a little more iffy, I think, just because of what this version is trying to accomplish (finding Michael Hutchence's replacement, obviously). IMO, they'd have to either find another band that needs a new lead singer or form a band specifically for the show that would need a lead singer for it to work a second time. Otherwise, it'll just become "Rock Idol."
I think that there is too much so-called "reality" TV, and the problem just keeps getting worse. While the first "Survivor" was something that a lot of people wanted to watch every week, one had to realize that they'd keep trying it, and that eventually it would get to the point where they would run out of places to put the competitors (why not do like a "Survivor: Death Valley" or a "Survivor: South Central?" (sarcasm)). "Big Brother" was good once, but it got repetitive and, quite frankly, boring to watch. And can someone please explain to me how you could make sequels to "Joe Millionaire" and "The Joe Schmo Show," much less one "Joe Millionaire?" And don't get me started on "The Will."
I'm not saying all reality is bad, and I'm not criticizing those who are fans- but to me, I'd rather watch a rerun of a show I like than a reality show whose concept was ripped off of so many others before. (Of course, given a choice between reality shows and lottery shows...)