I love the question you seek to answer.
A few years ago a survey attempted to poll men from all walks of life to answer the question:
"What age woman is most ideal to date (not-for-pay, I mean)?"
And of course the answer was never going to be as precise as, say, "26.43 years old" being the golden answer for everyone.
So they wisely measured the poll results in relative terms, coming up with "(half his own age plus seven years)".
Of course the answer to your query isn't going to have specific answers such as:
She needs to have big breasts, be between 5' 6" and 5' 8 3/4", be blond, and have a cute nose with seductive lips.
I really do think that the answer to your interest is another which needs to have the obviously-required flexibility from client to client built-in. Perhaps something such as:
"(A successful SP is) one who is highly skilled at selling what amounts to her personal vulnerability right up to the very edge of, but not beyond the point at which sheeeeeee feels uncomfortable and where the risk potential is too great for the agreed upon donation".
A summation like this allows everyone to maintain his or her interests in the physical features of SPs while grading higher those who go the extra mile to measure the client's desires and interests before doing her very best to get herself as near to being the date that he desires. In most ways this response also downgrades SPs who are under the influence of some narcotic for their not being very capable of becoming truly vulnerable. Drugs just glaze-over the depth of the woman behind them and while she might seem to take extraordinary risks while using, she certainly doesn't feel very much true vulnerability and thus can't really wield that vulnerability skillfully.
The drug-users out there on the streets, for example, are best 'utilized' by Johns who want nothing more than a warm and wet spot to get off. Those girls aren't likely capable of gauging their own vulnerability, and the men who date them most often don't care for anything beyond physical vulnerability for a few minutes.
The finer "escorts" in North America are people who, in large part for having either seen lots and lots of men over time, or perhaps none at all (professionally), are perfectly willing and interested in pushing the envelope of their own offered vulnerability to the extent which they are comfortable.
Men all over the world yearn for the vulnerability of women, and while that conjurs up images of mistreatment and assaults, it really needs to be understood on the grand scale and not just the worst-case scenario.
I'd venture to guess that way over 80% of men (and well over 80% of the men who see SPs as well) are honorable sorts who, while perhaps socially awkward in large numbers, would never ever do any harm to a woman. It is from that vast array of male humanity that the "successful SPs" draw their clients, and their repeat clients. Such sought-after women are usually extremely effective at sharing their vulnerability after skillfully measuring the individual risk factor for that session.
It takes no offered or perceived-by-her vulnerability at all for the crack-ho out on Hastings to get in a car and take it in the back seat for $30.
It takes very little vulnerability for the Richards/Seymour girl to inspire you to a room, talk you out of $400 plus, and then bend over the bed with one pant leg still on and her panties merely pulled to the side.
It doesn't take toooooo much vulnerability for the clear-minded twenty-two-year-old to jump in a car and give a man oral sex in a parking lot somewhere.
It takes a bit more vulnerability for a mid-track girl to invite a trick to her small apartment for a session.
But when an established SP offers gents the chance to visit her well-manicured abode for an hour of sincere attention, and then she reads the risk factor as being very low before truly affording him much of the physical affection that many women might share with their significant others, THAT'S VULNERABILITY! (in this context)
(in each of the five scenarios mentioned immediately above, there are within them a range of "service" offered by the working girl and, as with all other dates, it can very from slim-to-none to exceptional value for the $$)
The successful SP is great at laying the groundwork (computer connections/trails, telephone connections/trails, a work environment she knows and where she has various protective measures thought-out ahead of time for times when they're needed) which allows her to be extra comfortable in her environment, and that in turn equates to putting a visitor at considerable ease. When begun from there, most dates become likely repeat clients.
I hope this makes sense for Sasha=Passion.
"(A successful SP is) one who is highly skilled at selling what amounts to her personal vulnerability right up to the very edge of, but not beyond the point at which sheeeeeee feels uncomfortable and where the risk potential is too great for the agreed upon donation".
