...but you might say that now I am smiling too much! ;-)

Seriously, what you say about teeth makes some sense. In the last GR (of The Gentleman's Daughter) the Lady who had no teeth made quite an impression on me and that was in the Regency Era so I do see how that would come to mind. I like the notion that excessive smiling was unfashionable and you do back that up--though I'm not sure whether you intended to or not ;-)-- by pointing out that Darcy said the people there had "no fashion". So my conclusion is that it may have been considered unfashionable (in London terms) to smile too much and that Darcy latched upon this because it was the only fault he could find with the eldest Miss Bennet.

Also, I like your point about the fact that Darcy received no attention from the Meryton folk. There seems to be a gulf between Darcy and this community and I'd very much like to figure out where exactly it begins. Unfortunately, I fear it's one of those chicken-or-egg kind of questions. ;-)

We do know that everyone was impressed with Darcy (and his 10,000 pounds a year) for the first half of the evening. Then the tide was turned and people were disgusted with his pride. Was there one precipitating event that caused this? We have a couple of things happening, (his slighting Lizzy and not speaking to Mrs. Long) but I get the impression that people were already displeased with him at that point.

Could people have failed to pay him attention because they were in awe of him? Which brought all of his haughty pride to the surface and made him impossible to approach at all?