^You guys make very valid points and observations, which do pose questions. My take on some things is different, but maybe thought provoking also. As often the case, it may be long as I try to convey my thoughts clearly.
Coincidently, I just watched a few videos yesterday that I knew Beshine was walking braless at some point and there remains no doubt in my mind that all the wobbling originated from her implants jiggling on her chest wall; like a pendulum, a tiny movement become much more at full length. I'm sure her implants do have a tiny jiggle to them but the profound visible movement originates at the chest wall. When she taps a breast, any waves are quite limited, not like you would witness from a water filled balloon; in a recent video, she demonstrated just how firm they were; it looked like her finger depressed perhaps a quarter inch. But that is not to say that her implants are over-filled; I believe they are only now reaching the designed volume. As her underboob fold has decreased, we also see that her boobs flatten less when resting on a table or sink; indicative of no longer being as under-filled as they once were; changing shape should indicate an under-filled implant. I find the visual evidence of under-filled vs filled mostly in picture of her lying on her back; in 2019, she posted a picture set on the sofa in her cam room. Her breasts still kind of flatted out against her chest, creating more of a dome shape. Flash forward to OF material of the past couple years and we see her breasts width increasing with projection, exactly what one would expect from implants filled closer to designed capacity.
I agree, her breast do change shape somewhat depending upon position, but less than they used to do. I believe much of this can be attributed to her internal bra when standing upright (IMHO, the most profound shape change). It is essentially a sling that prevents the breast sinking any lower than the braided suture cords supporting either end, so in essence, the implant is lying on that surface when upright, thus flattening and becoming a bit wider. It may only increase the width an inch, but they do look different versus the shape when allowing them to hang freely.
Another thing is my citing polyurethane; likely because of the different levels of firmness, from hard to soft, it has many practical applications and is more durable and elastic than silicone; they have found that it can make superior implants. Of course, there may be other products as well, but polyurethane has been around for decades in the medical field and has been used for tissue expanders. And if you have ever dealt with sealants, you know that it can go from a liquid form to various degrees of expanded forms in a matter of seconds or hours for molding.
I have wondered what would happen if one implant ruptured, if she had a spare pair. Logic and her willingness to take precautions says yes and we know money has never been an object. Talking them out of the vacuum sealed package for a picture would be a bad idea, but taking a picture of her current ones before insertion may have been nice. And having worked with medical ports for decades, I am a bit befuddled on the refilling after draining; the viscosity would have to be very similar to saline not to clog the narrow tubing. I was also a bit befuddled on whether the implants re-expanding beneath her now massively deflated skin tissue would match the previous shape without stress until I discovered that unlike silicone, polyurethane gradually adheres to the skin. And like you mention, while this liquid solidifies and becomes a gel, what position should Beshine assume as this takes place? She would definitely want her resulting gel to conform to her chest wall. Still, I think she has found someone with not only expert skills, but who has thought these things through; considering how enormous she has made her breasts without major complications or defects in appearance, this took great planning.
While the plan for a permanent replacement filler remain a mystery, it is both a novel and smart approach that may eliminate the threat of leaks. I hope that if she proceeds with it, that the gel version if more like a foam version, thus becoming incredibly lighter. Perhaps she already know this and is looking forward to it as the weight of her boobs is common OF fodder and less weight would be a much healthier alternative.
Yep, could be wrong, but I do enjoy the thought provoking banter.