It might be better to let your distributor of choice know you are unhappy, as they are Stern's direct customers. If distributors keep buying up games knowing they won't sit on them, what does Stern care? I don't know how much of pinside affects total sales of NIB Stern's! But I know I've purchased a few through various distributors over the years.
I own TFLE and XMLE. I feel TF is complete, as all modes and everything on the playfield works. The game could possibly use a little more polish, but I think the last code update addressed most of what people wanted. XM, although a lot better with the last update, still needs to be completed. I was a lot more optimistic that it would be completed a few months ago, and it will probably still get done, but who knows when.
I'm not the type to buy a pin every year necessarily, but I do seem to get one every two years or so. My next purchase will probably be a MMR, and after that who knows. I don't think I'll buy without playing anymore. Seems like there is always plenty of machines either left over with distro's or huo for sale. If another Stern comes out that I want and I miss the boat on an LE, hopefully they make a premium, or the pro is good.