Thanks for the suggestion. We do receive quite a few requests for new forums or dividing current ones, and we always have to weigh the plusses and minuses of adding new forums to our already-long list.
Certainly there can be a benefit to giving certain topics their own forums in order to consolidate and organize threads on the subjects. But we also try to limit "forum bloat" that can overwhelm users when they navigate to the main forum page.
My feeling is that displays fit very well into the current Mac Peripherals forum. The forum gets solid usage, but is not overwhelmed with new threads flooding in. So I guess I just don't see a pressing need to move displays to their own forum.
But by all means, we'd love to hear what others have to say about this.