actually, whenever you change anything in the setup, it's not exactly the same car anymore.
and if you want to go "oh yes, it is", then please tell me how far "the same" goes and when "a different" starts.
show me.
-----
EDIT / ADDENDUM
-----
This reveals a lot. You're afraid of the devs implenting something you don't like before something you desperately want. What a mature attitude: afraid not even of a loss but of a delayed gain... I read of LFS being a sandbox in a thread (possibly racing vs. drifting) - and that just hit the nail on the head.
And obviously you're not sure if this idea is really so pointless and stupid - because if it WAS and no one wanted such things anyway, you wouldn't have to bother.
And who do you want to convince that it's useless? The devs? Possible supporters? Me?
In the end saying "I don't like the idea because of this and that..." would be enough. The rest is just self-revelation... and believe me, you're not looking good.