Tor is way more powerful than just a NAT traversal protocol of which there are dozens out there.

But thats literally what youre proposing to use it for in this product. Maybe youre unfamiliar with Tor, but it is NOT designed or optimized for file sharing. Its a whole thing lol Slapping Tor on something isnt a novel solution, and it would suck for all the reasons everybody knows it would: Tor is incredibly slow