I definitely see your point about the iMac (from the other thread), but I don't see how the MBP is the same.
Can you elaborate on your problem with 17" MBP a bit? Are you annoyed that it obsoleted the 15" model, or that it will be obsoleted by the inevitable Merom model to come in a few months?
If your problem is the second, then I don't agree at all. Like I said, Apple's using the best they have when they have it. Also, it's not like with the iMac switch, because we have a reasonable idea when the next model will come out. If you want it, wait for it. My only problem with the iMac release was that they really sprung it on us when nobody could have reasonably expected it.
I don't really see how it relates to the 15", though. The 15" is still around and not obsolete. They're two completely different models. The 15" does seem a bit overpriced now, though, I have to admit.
Just for the record, you're talking to someone who bought a Power Mac 9600/300 a week before the G3s started spanking it every which way at half the price.

So I do feel your pain.