Ok, let's build trust. I have 1BTC that I'd like to invest. You have 1BTC that is liquid to protect my investment, right? So since you promised that I would never EEEEEEEEEEEEEEEEEEEEVER receive less then 1BTC back from my investment, AND you have at least 1BTC on hand to protect my investment, there's no reason why we should incur extra fees by having me send you money. Just invest the BTC that you have on hand (to guarantee my investment) and give me the profits from the investment. If you are running a legit operation here, there's no reason why what I just laid out is unreasonable, right?
That's just giving you return from out of nowhere. No more different than me giving 0.15btc to random strangers. Good try there buddy, good try. This investment is a 2-way deal. Whatever you invest in me, I cut a portion of my return back at you (hence the 15% ROI), whatever else I make, I take some of that and put it back into the insurance funds so I can build a bigger base. So in the future, I can offer 3,4,5,6+ and so on BTC of coverage.
If you're asking why I'm not already doing that with my own btc funds, go back up and read why the trust portfolio is the primary focus. Even if I sent you 0.15btc from out of nowhere and you offer a positive feedback rating. That rating is just going to be how I gave you free btc and not about the investment experience, in it's proper scence.
Again, you are being illogical. Me sending you money doesn't build trust in YOU, it builds trust in me.
So, again, I'd like to invest with you. But sending you the money doesn't make much sense since I'm 100% guaranteed to get it back, right? See that's the fallacy in your plan. You are offering something for nothing, but are still asking people to risk something (by assuming you will send them their money back).