The LASSI method can be regarded as the application of the active space decomposition (ASD) method to the LASSCF reference wave function; or equivalently, a method intermediate between vector product state (VPS)-CASCI and VPS-CASSCF (see also Ref. 29) in that orbitals are optimized, but only for the reference state. However, all investigations into these methods thus far have studied only organic chromophores for which the appropriate model space is known in advance to consist of singlet excitations, coupled triplet excited states, and single-electron charge transfer states. For systems such as multimetallic molecules -key systems we would like to treat with these product-form methods -the questions remain of what model spaces are appropriate, how best to explore different model spaces, and how quickly they can be expected to converge.