To a degree, I get where you're coming from, on the general application and use of. However not all applies per each series. Having all models in a general area creates a lot of confusion for new-comers. As it appears to me in my short time here, anyone passing by a topic, hops in with commentary related to larger tractors, which doesn't necessarily apply.
I'm not meaning to rock the boat, I just strongly feel sectioning into sub-categories would be a better layout for user-friendliness. The sub-categories would contain more model/series specific info, and help maintain said info. As the place stands currently, it's Heinz 57.