I can see your point, but it depends how damage will be implemented in the final game, if you're only practising your skills and everytime you crash the car is written off or even slightly damaged and you have to pay credits to get it repaired, then it could become extremely frustrating.
But if the damage only occurs during the race/practice and disappears when you start again it could only put you off slightly but the consequences would be nil.
About the auto being irrelevant because you don't use auto, 99,99% of the time i also only use manual, but some cars are better ( more accurate ) if they were driven as auto only, and the existing auto option doesn't recreate that experience fully, that's why i started this thread.
You're also right about not forcing options onto people ( i was much too resolute in the previous post,sorry) , they should not be mandatory or irreversable but i think it would be difficult to integrate functioning auto and also being able to drive it as a manual within pro/sim physics at the same time.
That's why i suggested that if you wanted to drive an auto only car as a manual you could buy a manual gearbox in the tuning shop.
I know that perhaps i make it unnecessarely complex to most, but the thing i like about GT amongst many things is the sheer complexity and millions of options to fine-tune your car and the ability to learn from it.