Trying to achieve the above..
Does this still work in Mojave via Config Profile:
Peference Doamin: com.apple.MCXRedirector
Then adding the plist as normal
e.g
<dict> <key>LogoutRedirection</key> <array> <dict> <key>action</key> <string>deleteandCreateSymLink</string> <key>destPath</key> <string>/tmp/%@/Library/Application Support</string> <key>path</key> <string>~/Library/Application Support</string> </dict>