Hmmm. Well, if you're not going to have strategic voting, what's the point? "Skewing" the results, away from, what? Accuracy? Please.
I mean, it is "Survivor", right? By definition, I think a big part of it is strategic voting. Otherwise, it might just as well be a normal rate the song/album series of polls, right?
We're not really talking about scientific results here anyway, so what not let people have some fun with it? I think anyone whose been here a while could list the ranking all the records would get right now, and at most only be wrong in one or two slots.
Strategic voting might yield some surprises in what will likely be otherwise very predictable results. And you did say people could vote on any criteria they wished...which is what they are going to do anyway.