I think an eepsite would be very nice on endchan. For those who don't know what an eepsite is, it's basically a hidden service but on the I2P network, I2P is overall better than Tor, basically, and in my opinion it would be the best thing if this lovely imageboard had an I2P mirror for privacy enthusiasts.
Developer, if you're really implementing this, I would recommend using the C implementation of I2P called i2pd for hosting eepsites, the Java implementations of I2P are slow.
Thank you for taking your time to read this, have a great day.