Along with zones (https://fluid.canny.io/feature-requests/p/fluid-link-spatial-zones-powertoys-fancyzones-style), Fluid needs to remember where my windows were to avoid rebuilding the workspace every time I connect.

PID-based Memory: Since I hibernate my computer, PIDs often remain the same. Fluid could map PID to spatial position so everything reappears exactly where I left it.

App-based Memory: Alternatively, map the App Name to its last known zone/dock position.