That doesn't make much sense because our shifters don't have any FFB. If you fail to shift in a real car you don't need to look at the gear display, you'll know it. GT5 has the feature you're asking, and also it's very clutch-sensitive - it's SO annoying! Every time I'm a bit too quick with the clutch, I shifted, the revs go up into red zone... wtf?! ah it's in neutral again and several seconds are lost. It's completely unrealistic and counterintuitive. Besides if you match the revs carefully you can shift w/o using the clutch pedal.
PS: however it would be nice to have gearbox wear depending on how one shifts!













