mklink is the Windows equivalent; I do it for all scripts, presets, and plugins (I create a subfolder in plugins called 'User Plugins' and link that so as to not get doubles of the built-in stuff), and that seems to work just fine for me for between-versions. All synced over Dropbox, with MediaCorePlugins as well, so that other computers can get to it just as easily.
Also have a folder there for aescripts+aeplugins tools with custom config needed. I've been trying it with OriginalUserWorkspaces & ModifiedUserWorkspaces to some degree of success, but it's messy / wish there was a better way!