1 in out 8 is about right in a freezout satellite, with a semi-decent structure.
I would like to see satellites that run with the Pokerstars style frantic hour up front, with heavy blind structure, fast clock, short stacks, and cheap rebuys, but then at the end of the rebuy period, it goes back a few levels and the clock slows down. This could generate significantly more seats from those people (like Ger) that like to splash the rebuys to try and get a stack, but once the rebuy period is done, the tourney plays out far more like a proper tourney.
I don"t like the 3x turbos on Stars - they are great at generating seats through rebuys, but there is no skill edge whatsoever at any point, other than knowing shove/fold ranges. My thoughts above give both the crazy rebuy context to generate seats, but then allows for those seats to be played for with some modicum of poker skill.