My thought is that anything multi-level would be extremely damaging to the brand.
A single-level "lifetime fee capture" bonus would be more reasonable, but even that would turn away some people, who would want to collect their own referral bonus.
The purpose of BTS is to own a share in something that can become great. This marketing idea feels a bit gimmicky, and it complicates the user experience. In my opinion, if you build a better mousetrap, the world will beat a path to your door. Focus on the fundamentals.