Re: BBpress preinstalled plugins
This is unlikely to ever happen as it goes against the entire concept of bbPress being “bare bones”.
For every plugin you think is very useful, another user will find it useless (and just slows down bbPress).
I’ve been debating creating a “plus” version of bbPress that will bundle many of my plugins to help get people started more quickly but that won’t happen anytime soon (at least not until 1.0 is mature).
ps. why do you use “private forums” and “hidden forums” together? Hidden Forums should be a full replacement.