Since defective service has its own consequences, a plaintiff has an incentive to service correctly, so I'm curious why a neutral party has to serve in some places like California?
Also, to what degree can the plaintiff not be involved. For example, if the plaintiff gets a neutral person to serve the papers on their behalf, and plaintiff + server are taking a walk on the street where defendant lives, and plaintiff points out "yeah that's the person" and the server serves the defendant. Is that OK? Since the server technically wasn't the plaintiff, even though the plaintiff was still right there?
Or if the plaintiff is a company, does this mean all employees of that company cannot serve papers, or only the company leadership?