This version is a stand-alone monster, (although it will be accompanied by a special Paladin model) although I might, If the horns and neck-ridges allow for it when I choose the final ones, sculpt a small rider to sit behind the head, Never-Ending Story style. Probably not, as it looks kind of uncomfortable right now.
Assuming this one sells well enough, then I will turn my hands to converting it into a Wardragon - replete with riders area and banner poles. As to necks, I might well do some alternate ones, time allowing, as I've already got lots of ideas for different poses etc. Plus people already requested two-or-more-headed dragons...