Exit Enclave equivalent for encrypted Tor-to-Tor connections
While current stable version of Tor (0.2.2.x) still supports Exit enclaves. The new versions of Tor (> 0.2.3.x) use a new descriptor format (microdescriptors) that allow relays to specify an Exit Enclave policy, but clients will not use it, therefore voiding the purpose of exit enclaving.
The ability to allow a Tor users to reach a certain destination without ever leaving the Tor network is a feature that a few people are interested in.
I think these properties could be what we are looking for in Encrypted Services (#2555 (moved)), though what needs to be figured out is a way for a client to understand that a certain destination is running a Tor ES.