Yes, there are several. Consider three. First, a single multi-jurisdictional will can help eliminate potential confusion and controversy. For example, which will applies to which property? Which personal representative is charged with which responsibilities? Second, a single multi-jurisdictional will can help prevent forum-shopping by beneficiaries and creditors. Third, related to the first benefit, a single will recognized by more than one jurisdiction can prevent the situation of a single-situs will from being interpreted to revoke another single situs will, causing some or all of your property to pass under the intestacy laws (intestacy is undesirable because the assets are divided and transferred to your heirs according to the government’s plan, rather than yours).