While it's not a deal-breaker by any stretch of the imagination, in my opinion keeping the waypoint system from D:OS opens up the same options for heavily abusing the game as far as combat and escaping out of places and situations go.
The first example that comes to mind is
the totem-stealing quest in the druid grove. While I did manage to pull off snatching it and getting out undetected on foot by taking the lift so that it remains interesting and immersive, all it really takes is casting fog on the totem, taking it and teleporting out using fast travel.
Maybe it will be better if it was limited only to teleporting between the waypoints themselves rather than having access to them all the time? They are located conveniently enough so that walking back to them, if need be, is not time-consuming. It is also curious how Chapter 2 will be handling fast travel if it's supposed to be set in Baldur's Gate. Having rune circles spray-painted throughout the city and our party casually using them to warp around will be a bit... awkward.
