How sure are you of this? I ask because I've seen Sonia (who works out of the same location and phone number) twice now and I never noticed anyone else in the apartment but the two of us. I did see this screen you are referring to but I am 99% sure there was no one there (if there was then he was 100% silent and did a REALLY good job of hiding). I even looked over there at one point and it just looked like a seperate area with another bed or massage table or something that wasn't in use. These girls may not have their own independant place that they work out of, but they are pretty much independant. It's basically just three or four girls at any one time who use the same phone number and the same incall location near Joyce and Kingsway. But there are no managers/pimps answering the phone or anything like that. Just one of the girls.
Back to the topic of Heidi, I can't give a review of her because I haven't seen her. But what I can say is that from talking to Sonia, who is a very friendly and trust worthy SP, I know that Heidi uses 100% real pics and is at the very least an honest and friendly SP who aims to please. They don't let anyone post fake pictures at their location/phone number.
definition: Independents may share an incall location (altho I have never heard of more than two in one place -- you say there are up to 4 at this one), but no independent would ever ever share a phone #. Because that means that if you call for Heidi, you have a one in 4 shot at actually talking to Heidi, which is never what someone who is independent would allow to happen. Independents also don't have someone else posting their ads for them, and clearly these advertisers ads show up within minutes of each other. That isn't a sign of independent thought, but magical telepathy lol.
Anyways, in the past a guy has answered the phone when that number is called. That is probably what is being referred to here. If he isn't answering the phone any more, that might just be because they figured that wasn't good advertising for independents lol.
I don't mind if sps aren't independent, I don't think anyone is shy about going to a place with more than just 2, but I think it is quite naieve to pretend to be independent when it is so easily disputed by the first person who calls, visits, and finds out otherwise. It isn't an issue at asian micros, why should it be an issue at non-asian setups.