The best civil in the world will not be able to survive to the trial phase if the court determines there is insufficient service of process.
The reason is that service of process lays the foundation of personal jurisdiction, which refers to the court's jurisdiction over the parties involved in a civil action. Service of process is required in all lawsuits. Absent this, there can't be a valid lawsuit.
Only following plaintiff's proper service upon a defendant is jurisdiction obtained by the court over the defendant to impose and enforce judgment of liability and damages.
Service of process is the procedure by which a plaintiff in a lawsuit gives fair notice to defendant of a legal action. This enables the other party to respond before the court in the proceedings and to be an active participant.