One change to make Pinhead's power more rewarding
Pinhead's possessed chain is a solid ability, with a very high skill ceiling. It's challenging to place the portal in the right spot, and the high speed chain can be hard to control, but it's extremely satisfying when you land difficult shots from long distances or around tight corners.
However, these kinds of extremely challenging shots feel unrewarding: the chain usually ends up spawning inside whatever obstacle you were trying to avoid, leading to one of your three chains immediately breaking on the environment. This makes it so that landing skillful shots is less rewarding than simple straight shots, or summoning the portal on top of survivors.
I think the possessed chain (and only the possessed chain, not the extra chains that spawn when you hit someone or the chain hunt chains) should be slightly buffed to not instantly break on the environment or other players. This would allow Pinhead players to take these difficult shots without being punished by the game if they succeed. It would also make his chase power slightly more consistent, which is another thing I often see people complain about.