I suppose this could go for single-player as well as online roleplay (if that ever happens).
In LSPDFR you have a police radio that can buzz in calls and officers can communicate. Obviously here in 1899 they don't have that technology. There's the telegraph, which I suppose could play a role. In larger towns like Blackwater or Saint Denis the game could continue its pace as crime could be found around a lot of corners, but what about the sheriff's office at Rhodes, Valentine or Strawberry? Would you be called out to The towns aren't that big, so could it be a lot of hanging out in the Sheriff's office, feet back listening to banter from the inmates? Waiting until evening to hang out at the saloon for the inevitable brawl or card cheater getting shot down.
Then again, in a way it's representative of RDR2 compared to GTAV. I'm in no way complaining, just trying to think what the experience will be like.