Yes, people are going to complain about this. Sudden increases in challenge level are often criticized by a significant number of people. It's like how every time an MMORPG nerfs an overpowered weapon, the forums get flooded with 'OMG MY 1337 BLASTOR IS NOW USELESS THIS GAME NOW SUXX!!!11'. I can live with that, as I believe that if this works, it'll be such a great addition that people accept it eventually.
Safe has been thinking about PR I bet 
Don't quite know what gave me the idea, but seeing how successful this system is in PR is admittedly one of my reasons for posting this thread - I know it can work very well.
Having said that, though, I still think most maps should work as before, it's just that Mos Espa is so very suited in my eyes to this kind of gameplay that I think it'd be a shame not to implement it.
How many times have you gotten a lift from sombody who just brings you to the middle of nowhere where neither of you are usefull.
Then tell them before you leave where you need a lift to. As a driver, send 'where to?' before starting to drive. It's not really that hard.
You know, there are times when I contemplate making a realism version of FS once the mod has a big, stable fan base. You know, the same way those other people made a realism version of Desert Combat. Make it more of a PR-style experience. Will probably never happen, though
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"One of the bitches actually gave birth while she was attacking, and her puppies joined in on the carnage."
--the awesomeness that is Boatmurdered.