When I imagine the classic dragon vs. adventurers scenario, the dragon is typically ginormous. Not just large enough to hold an adventurer in its mouth, but able to easily swallow one in a single gulp - I'm talking its teeth being as long as Sir Forescale's sword. In such as scenario, Tianot would be even larger.
Now, I recognize that that's just unlikely to happen. A "miniature" that large would be incredibly impractical and difficult to design so that it wouldn't collapse under its own weight, not to mention likely prohibitively expensive even in bones. I'm quite okay with the size of the colossal critters that Reaper's put out already (as I mentioned, their sheer size as it is makes them too intimidating for me to paint), but I can understand why some people might want something larger.
I have to admit, I'm really excited about eventually seeing the full model for Tianot, complete with Sir Forescale.
This is very true, and especially in a world like the one I play in (Glorantha), where true dragons are kilometers in length (really geographical features beyond the ken of humanity), and have been known to decimate entire armies, not just piddling little adventurer types. There's no way I could find a model (even Tianot) to reflect their size. (Heck, full-grown giants in and of themselves are over 100 meters tall)...
That being said, dream dragons in Glorantha are quite a bit smaller, and easier to model, so they're really the ones the adventurers would even have a chance of fighting and defeating (like my avatar, the baby red dragon). Tianot would be a cool multi-headed dream dragon they could fight, so it's on my list... :)