Re: bbpress integration
So far from what I can see of the second release candidate of bbPress 1.0, it looks like integration has gotten better for BuddyPress and WordPress MU, but don’t expect a simple turn-key installation. There are simply too many configurations to not have to dip into the wp-config.php or bb-config.php files a little bit.
Integration of bbPress1.0 RC2 is essentially the same as the Alpha’s, other than there being a spot to enter the ID of the main WPMU blog. There’s also an extra variable to add to the config files to force the integration method, but I suspect that to be only temporary.
Once everything becomes 1.0, things will probably make more sense and come more into alignment.