There seems to be a bit of a consensus regarding the honorifics, yes. I'm pretty much decided to go with Lao and Xiao (at least for Chu and Guo). Not sure yet how much I care about standard stuff like 'ge' and 'jie'.

I'm afraid the Black-Cloaked Envoy will remain that, but hey, they're softsubs, if you use them you can always switch him out. ;)