After four years of research within the PLANETS project and two years of KEEP the jigsaw puzzle of emulation becomes a more complete picture. Emulation strategies are now seen as a viable complement to migration. A conceptual and theoretical groundwork has already been laid out, eg proper definition and selection of suitable emulators. However, integration into preservation frameworks and additional software archiving remain open research questions. This paper discusses several aspects of reliable integration and proposes development steps for a more complete emulation-based strategies in long-term preservation.