I'd give a big <3 to whomever could make a pin condition that can be set on the behavior sidebar so it doesn't have to be initialized in the event sheet.
->attach pin2 to object
->press "select" object on the sidebar
->select object it's pinned to
When layout starts, object is pinned as if there was condition "on object created, pin to new object".
I think it could save a lot of time, I do a lot of pinning and find it really tedious to create events