Yes, the PW-SAF framework could be adapted to model other types of coupled nonlinear systems beyond oscillator arrays by adjusting the formulation to suit the specific characteristics and dynamics of the system in question. The piecewise linear approximation concept can be applied to various coupled systems where individual components exhibit nonlinear behavior that can be segmented into intervals for modeling purposes. By identifying the key parameters and variables governing the system's behavior and applying a similar piecewise approach to approximate their interactions, the PW-SAF framework can be extended to model a wide range of coupled nonlinear systems, such as coupled amplifiers, filters, or even nonlinear transmission lines.