I completely agree that the external exam is the best part. When I look at exam images online, those are what I look for, but there never seem to be many. My favorite exam stories are ones that include a detailed description of the external exam - if I come across a story and the pelvic exam description merely consists of an abrupt insertion of the speculum, or the doctor immediately inserting his/her fingers into the vagina, I stop reading.
In real life, the only times I've had much of an external exam were: as a child at the pediatrician, where the genital examination was only external (frog leg position, gently spreading the outer labia); dermatologist skin check, where the folds of my vulva were inspected; and once when I had an ingrown hair that I thought might be a std, so I asked my gynecologist to look at it.
If I were to participate in a play exam, I would definitely ask that plenty of time be spent on a thorough external exam, where I'm positioned in a wide frog leg with the soles of my feet nearly touching. The doctor would start the pelvic by gently separating my outer labia for a nice long visual inspection of my vulva, then slowly palpating both inner and outer labia, carefully retracting the clitoral hood to inspect my clitoris...
I have very puffy outer lips that stay closed even when my legs are apart, so i find that having them spread open is the most embarrassing and thrilling thing. The doctor is exposing and inspecting everything in between them that was previously hidden - my most private parts, especially my clitoris. All I can do is lay there and stare at the ceiling, even though I'm crazy excited.
Sorry for rambling, but yes. External exams are the best part.