Good thinking.
As you go "up the line" of a manufacturer's line, the "better" the receiver, the more features they throw on. FWIW, I've got a Denon 2802 and love it. Yes, it has multi zone capabilities but I've never used them and, from what it takes to implement this feature on virtually all receivers, I doubt I ever will.
Now, simply running a pair of speakers to another location seems fine. This has been around since the stone age of stereo but when you start talking about needing electronics, that changes the whole outlook.
To me, it seems cheaper, easier and more convienent to simply put in a low end system in another room rather than go through the hassle required to avail oneself of multi zone features. Ya gotta run interconnects, ya need another amplifier, ya need two (not 5, it's only stereo anyway) speakers.
Heck, add a source DVD/CD, replace the power amp with an integrated amp or receiver and you've got a stand alone system that has more flexibility than any multi zone receiver offers.