I'v asked for it once before in the blizz forum way back when. (And even got a "maybe" response )
But please allow us to attach actors together through individual opsites.
Currently the to-be-attached actor will be attached ONLY by it's 'main' opsite to the custom opsite on the host actor.
What would be fantastic is if we could attach it from opsite to opsite. for instance attach actorA by ActorA 'weapon01'