My Comma 4 arrives today, and I think it will be great (using it with my Lightning, not my Model 3), but I think it is just a temporary solution that is effectively a dead man walking. The latest cars are not usable with a Comma and likely will never be, with manufacturers locking down the CANBUS with encryption.
Literal anticompetitive behavior in the name of safety. The more of them that move to subscription services the better the chance the scheme gets legally challenged I figure.