This is already, in many ways, a solved problem for smaller setups with a limited asset library. If the assets are stored in OneDrive, DropBox, Creative Cloud, etc. and all render nodes are already synced to the relevant cloud provider, then no explicit sync is required. Simply specify the root path to the sync folder for each node and all assets will then be relative to that. The same solution would work equally well if the shared location is a NAS. All that's needed is a simple check of hashes to validate that everything is indeed up to date.

Better sync. I'd like to be able to specify a "root folder" for each node, correlating to a mounted drive, or cloud storage of some form, where all paths to blend files, textures, etc. are always the same on each node relative to that root. I already have a shared asset library of models and textures that I use across multiple scenes, having to pack these into each and every blend file is insanely wasteful both in terms of storage usage and sync times.