Domains are 0.10 specific I believe, and 0.10 is still bugged in few areas. I'd stay on 0.8.23 for quite some time since we are talking about stability.
It is large, but doesn't use any streaming or piping. As for remote services, just a bunch of remote APIs, and they work fine.
With the changes to streams in 0.10, I can understand it having some issues. That slipped my mind... but I don't do much streaming so I just assumed it worked.
Also domains are in 0.8