I don't recall ever reading about the specifics of the DOPE anonymous function. Is it a centralized mixer (my assumption since it's "up")? Does the mixing service have a maximum capacity at this point in time? Are any decentralized mixing schemes currently in consideration?

Yes its currently centralised, current max is about 2m, and yes we're looking at a way to have either a much better centralised version or decentralised.In case people have forgotten, there is also a 1% fee, we currently use that to build more random inputs.

I don't recall ever reading about the specifics of the DOPE anonymous function. Is it a centralized mixer (my assumption since it's "up")? Does the mixing service have a maximum capacity at this point in time? Are any decentralized mixing schemes currently in consideration?