I’m just trying to get around the same problem myself.
I have a development multisite install, and want to run the BP Registration options plugin on every site EXCEPT the main site. Buddypress will be running on all subdomains but not the main site.
I created a plugin using the above filter, which then allows the BP Registration options to appear on the filtered site ID, but how can I amend this code to allow the options to appear on all site ID’s except ID=1 ?
