You know, we first purchased at BCV because it seemed like the place we really wanted to be. Last year, I purchased an add-on at SSR thinking "we'll just use those points as last minute points and be happy to get what we can after the seven-month window." That said, I finally decided to sell the SSR points as I don't want to have to worry about switching to where I really want to be. And, I can't help myself from shaking my head in surprise when I read someone's "we just bought
DVC" or "we just passed ROFR" followed by "I'm getting on the waitlist for BCV, BWV, or VWL."
To answer your question directly, I, personally, feel as though owning where I truly want to stay is very important to my overall satisfaction with our DVC purchase. Depending on your travel habits, SSR (albeit not your preferred resort) may be just fine. Specifically, if you are not one to book more than seven months out anyway, then it really doesn't matter which resort you own at. However, if you are a forward planner, then you may find it incredibly frustrating to have to wait to book your vacation where you really want to stay (and then sometimes find out that you can't get what you want).
I know this is long, and it doesn't out and out answer your question. However, I'm seeing more and more people post their excitement in buying DVC followed by a "now on to that waitlist at......"