A national scope injunction should be limited to only those instances where it is truly and absolutely necessary to protect the interests of the party seeking it, and not just because it would be convenient or because it “makes sense.†One of the reasons for this, in my view, is precisely because it restricts the number of other cases that might be brought in other districts, which limits the number of other judges who will have the opportunity to review the facts and the law and render an opinion on it. This is a generally bad thing for the judicial system we have because it limits the ability of an appeals court to come to a well-reasoned decision in the matter. Appeals courts rely a lot on the existence of numerous cases with differing opinions because it gives them a much better view of all the different aspects of a case, and oftentimes a district court may think of some aspect that the apppeals court would not have thought of on its own - not because appeals judges are stupid, but just because that is human nature, inasmuch as we are all limited, finite creatures.
As I pointed out earlier, a national injunction stifles this process and, as a result, far from advancing the cause of the fair and efficient resolution of disputes, it stymies that process.
To my thinking, this is a very good reason to put serious limits on national injunctions.