No real thought needed here. Fast travel should be a mandatory feature in any open world game and like Psy said, if you don't like it, don't use it. Restricting travel is an archaic gameplay element. Personally I loved games like Xenoblade Chronicles that pretty much allowed you free travel to anywhere at any time. I hope FFXV goes that far and allows free travel starting from anywhere rather than having to run to the nearest waypoint or something. I also hope there are several camps per zone. Basically copy Xenoblade. In fact, copy most everything else from Xenoblade too.