Stop using RC4. Although it is simple indeed, it is subject to multiple security holes in the algorithm itself.
While this is true, that is not the point of RC4. It's purpose is to obfuscate
BitTorrent traffic to avoid ISP throttling.
Then it would not be compatible with other clients.
Using RC4 puts Tixati users in danger.
RC4 or BitTorrent obfuscation is not a replacement for a VPN. Torrents aren't private and this won't make you anonymous or prevent you from getting a letter. When you download public torrents, your IP is shared using DHT, PEX and trackers. Adding encryption such as AES won't help. If this is a concern for you, use a VPN or private tracker instead.
This extension allows the creation of obfuscated (encrypted) connections between peers. This can be used to bypass ISPs throttling BitTorrent traffic.