This work investigates the theoretical basis for functional decoupling of optical, thermal, and mechanical constraints in nano-engineered multilayer radiative surfaces. The study develops an analytical framework combining radiative heat-transfer modeling with material-level considerations to evaluate how spectral selectivity, emissivity control, and structural layering influence overall thermal behavior. Results under controlled assumptions indicate that multilayer architectures can enable independent optimization of optical response and heat-transfer performance while maintaining mechanical feasibility. The analysis establishes design principles relevant to thermal management systems, energy-efficient enclosures, and advanced radiative surface engineering.