The new European Nature Restoration Law presents a key opportunity to enhance ecological and socio-ecological connectivity. In the Grenoble region, a complex mountain landscape, we explored how different restoration, conservation, and ecosystem management actions could influence connectivity dynamics around protected areas. Building on prior analyses of spatial bundles of ecosystem services, derived from 12 quantified services using spatial models and grouped by social values, we identified areas with low ecosystem service supply and engaged 15 key territorial stakeholders in a participatory process to co-develop future landscape reconnection scenarios with special focus on protected areas. In the first workshop, stakeholders proposed landscape changes to improve ecological connectivity and ecosystem service provision. Based on these inputs, we developed new land-use scenarios, which were then presented and validated in a second workshop. Finally, these scenarios were evaluated to assess their impact on socio-ecological connectivity and the transmission of ecosystem services from protected areas to surrounding landscapes through their borders.