I soon came to my senses and decided to give it a little refresh instead. Better the devil you know etc.
Full service
All front suspension arms
Replaced torque convertor
Gearbox service
Pleased to say that the rev hunting and slightly odd behavior from the gearbox when under light load (typical torque convertor issues) has now gone and I am back to the lovely smooth drive
The front arms have tightened things up beautifully as well.
With all the rear arms and bushes replaced about 30k miles ago she is driving beautifully.
Now I just need to refurbishment the wheels and I'll be happy. Might need to let my bank balance recover a bit first though!

Sent from my SM-G935F using Tapatalk