I should point out that RC4 is not adequately secure, I recommend using UDP exclusively and not use TCP

Datagram Transport Layer Security (DTLS) to encrypt UDP traffic. Still I am not sure this will solve the problem with torrent monitoring.

afaik RC4 was not intended for security, but to obscure traffic from ISPs. it's not effective for this purpose either in wake of Deep Packet Inspection.

You need to raise this issue at Bittorrent Enhancement Proposal level and find good arguments that haven't been voiced before.

I am not a participant with Bittorrent Enhancement Proposal

I use Tixati so maybe the developer can do something with the system to secure torrents from fakes and other malicious parties

RSA seems to be solid to secure a session, RSA 2048 is maybe fine but RSA 4096 is more robust. Then using SHA3 to check pieces is pretty standard but even the old MD5 can check blocks fairly adequately.

A robust P2P session makes the troll unhappy as they cannot intercept and ready the messages.