This is a great story, and it is a shame that there have been no new episodes for a long time.
Rachel is a great character and has a dream lineup of orthodontic appliances. Who wouldn't want a partner with braces, an expander, a Herbst appliance, a tongue crib and headgear? I like how Rachel punished Mike by temporarily converting his Van Beek into a fixed appliance! However, she would probably enjoy seeing Mike with more permanent hardware. I suspect Mike wouldn't be quite as enthusiastic.
I wonder what 'treatment' Rachel might have next? I think a little headgear upgrade might be in order. Perhaps a stylish Interlandi with an extra facebow and a chin cap. What would other readers like to happen next?