Agreed that Open Blocks should apply to Comms only.
If you want to play alone or with a select group of friends, then [Solo] and [PG] are already there for you. Exploiting player blocks in Open PP & CG's, if this is indeed a forthcoming feature, would be gamebreaking.
If you want to play alone or with a select group of friends, then [Solo] and [PG] are already there for you. Exploiting player blocks in Open PP & CG's, if this is indeed a forthcoming feature, would be gamebreaking.