What is a key factor in promoting judicial efficiency in joinder?

Joining multiple parties and claims in one lawsuit is a vital aspect of promoting judicial efficiency in the context of joinder. This approach helps streamline the court's resources and reduces the potential for contradictory judgments. By consolidating related claims and parties into a single lawsuit, the court can address all related issues at once instead of holding multiple trials for what may be essentially the same issues. This not only saves time for the court but also minimizes the burden on the parties involved. Furthermore, judicial economy is served because the legal and factual questions can be resolved in one comprehensive proceeding, allowing for more efficient use of judicial resources.

The other options do not directly address the primary goal of judicial efficiency in joinder. For instance, representing oneself without legal counsel might actually complicate proceedings rather than streamline them. Incorporating multiple legal doctrines into a single hearing deals with the application of law rather than procedural efficiency related to parties and claims. Lastly, while the dismissal of frivolous claims is important for maintaining the quality of litigation, it does not inherently promote efficiency through the consolidation of related claims and parties.