You do realise that you don't actually have to use the rewind feature if you don't want to right? I've not used it once, but I do agree with most other comments regarding F3's downside. I also had shift but traded it in as IMO it was crap
Super aggresive AI who constantly ram you etc and what's with the whole getting bonus points for spinning cars out and ramming them off track? Each to their own though I guess.