I have replaced the intermediate shaft for a brand new one, took it for a 5 mile drive, i think it might be better but not night and day better. the rack mounts look like a mission to replace as one of the engine mounts bridges the rack so would have to remove this to lift the rack, so these are still to do.
i have tightened the preload nut by around 25 degrees, i think i might go another 10 degrees as it feels tighter, but i could cope with more. i prefer the old school heavy steering as opposed to the new finger light steering feel.
not sure what else to do now, maybe this is how VW made them? but i drive ford & renault equivalents all the time, and loaded up as well, we sell and fit tiles. big vans have driven like cars for the past 15 years now, so i can't believe VW are so far behind.