Well, I never suggested you do that. But surely there is some sensible middle ground, where high traffic can have some influence. I often come across pics with hundreds of rating votes but less than 50 lifetime views. That makes no sense when pics with thousands of views not only don't have a rating, they don't even have any votes, and aren't going to get any, either.
Rating the stuff people want to see seems more important than rating low visibility, low interest stuff. You don't have to abandon spreading rating votes around in order to provide a little priority for pics that suddenly become busy. I wouldn't shift priorities for one-night-wonders, but when pics lead the view list for weeks on end I think it makes sense to shift some extra resources their way.
I guess I'd do something like 20% to the top 100 pics (for those pics with low vote numbers, like < 100), and 30% to the top view getters (unless they are already well-rated), and 50% as you are doing now.