Well, exactly. I am not too worried about Club Level fast passes, because you aren't the only one that feels that way about it. Certainly they can look back and see what their bookings of CL property was like before AND after CL FP became available.
But if they think they can roll the program out to everyone- I'm not sure that's smart.
First, they need to fill up CL rooms. Mine was steeply discounted- that means people aren't coughing up the money to stay in one under normal circumstances. It makes no sense to get rid of something that seemed to be getting those rooms, finally, booked to capacity, as well as the extra ticket revenue.
Second, CL guests are a different animal than regular park-goers. They're willing to spend big money on Disney- it's a giant leap to think everyone else will, too. I do not think the results of this pilot program can be generalized to the entire guest population. They'd be losing CL guests on the (unproven) theory that other people can replace those revenues.
So, I think that the CL program will remain as it is. However, I do think they'll introduce other forms of paid FP access that further erode the basic park-going experience. That's what this seems to be. It only makes sense for Disney to favor its on-site guests, especially the spendy ones.