I agree that there should be no TC on LFS, except if it was a very limiting version of the same, since there is no "perfect" TC system that can get to the limit as good as a human being can (as being proven this pre-season of F1), so it would make turning/applying throttle while turning slower than it's manual counterpart.
Then again, considering the hypothetical age of the cars on LFS, it would feel silly that they had it, specially, as pointed out by tristan, it's a simulator where you need to show skill (meaning there are no driving aids, so everyone is on the same level for competing purposes) and there's no physical risk on the driver's side.
It would be nice if the devs would get hold of another F1 from the 2008 season, without TC, not only for comparation but also for the fun of learning how to handle over 500HP without assists.
So, if it was a matter of casting a vote, mine would be a 'no', specially minding Woz's post, and keeping in mind that people who finds controlling current cars hard either has no car or is too used to drive with all those electronic and mechanical aids, which actually influences people's point of view.
Nice thread, by the way :]