In an ideal world, removing ABS, PAS, DSC, AYC etc would mean is that people would regard driving as something which requires more skill and would act accordingly, driving more cautiously and getting driver training.
In the real world though, there'd be more crashes left right and centre - nowadays driving is seen as a normal, everyday thing, not anything in which a great deal of interest is taken for most people, as such I expect a large proportion of the population driving cars with DSC and the like probably don't even know their cars have it and what it does, thus would have no idea at all how to do without it! You'd get people deciding to practise their skills 'on the road' with predictably bad consequences.
The test should be changed to teach people a better understanding of driving physics and car control, and what things like ABS do, so they can drive more competently without relying bliindly on electronic gadgetry, and actually know how to control a skid properly. But the problem is an issue of education and banning ABS etc overnight would do nothing to improve matters, in fact it'd make things far more dangerous in the short term IMHO!
Driving aids are useful, whilst I agree that if you're a really talented driver pushing hard they may rob you of some of the involvement you crave, but the bottom line is that for most of the driving people do, they improve safety. Just often do you folks test out your DSC, ABS and the like on your normal commute (as opposed to going out and having a drive for fun) anyway?!