oh they are easy. I can write up classifieds and reviewpost in minutes thats not an issue once i have one integration done porting them to the other apps is easy.
Right now Xenforo is on a beta 5. They still have alot of hard coded variables etc in their code. I have no idea why they hard code the globalsalt variable. Seems to be that should be a config file variable if you ask me. My access is very limited on the xenforo site so I do not have access to get alot of info. Things I need to figure out is more about the style integration. Whether or not its possible to wrap the xenforo header and footer around our application. Those I think are things that might come along as the application matures. I do not see alot of info about that yet.
All thats immaterial really because at this point we can soon as I finish up a few things support the level of integration over 50% or more of our integrations use.