The Getaway didn't fail as such, It just did really bad compared to GTA because of those flaws. It also is made for British people since we understand the dialect and know what their phraseology means.
Anyway back to the wishlist.
I was thinking about this but it would probably too hard to implement, but there would be a 'cheat' or reward where one could enable a type of simulation mode. Where everything becomes much more similar to real life. For example, running red lights will cause cops to give chase, you would only be able to carry guns you have room for. etc.etc.
That won't happen it was just a cool idea, at least I thought it was anyway. It's not.