In Skyrim, fast travel completely sucked and it often ruined all immersion, like most of the things Bethesda made. You are able to teleport from every outside location, sometimes even when overburdened. You don’t necessary need to unlock a location before you travel to it. It raised “cheats” like teleporting from one part of the town to the other instead of walking to save time, or teleporting to the other side of the world just to sell your stuff for more money and go back from where you came in seconds. It didn’t take any time or efforts and fast travel didn’t punish you in any way. The worst part is that quest were written in a way which FORCES you to use fast travel in order to play efficiently. If you don’t use it (like me), you end up with 300+ hours and in the middle of the game, time spent mostly on traveling and fighting random generated road enemies… At the end, I left it unfinished and will never play it again, Skyrim doesn’t worth my time. In reality, it is a childish game IMO. Same goes for Fallout 4, which I didn’t managed to make “hardcore” enough even with survival mode and some mods, left it at the middle after 200+ hours. The game title isn’t important, it’s the maker… The way Bethesda make their games just sucks. If they didn’t spent millions in marketing almost nobody will buy their products.
In Witcher, fast travel is acceptable, as most of the things CD Projekt do. You had to discover a location in order to travel to it and you are obliged to travel from post to post, which aren’t anywhere. It wasn’t ruining my immersion and it possibly can’t be used for taking shortcuts just to sell or avoid walking, as it wasn’t any reason in doing so. The only downside I can tell was that fast travel in Witcher 3 didn’t pass the clock - you teleport immediately, in the same hour and with the same time-related effects you had. They could’ve made it calculate an approximate time requirement and pass the time with every travel. The game was written in a way which allowed the gameplay without fast travel, which is great. In my first playthrough I spend more than 400 hours in Witcher 3, but passed the main game with almost all sidequests and I almost never got bored doing it. Right now, I am at my second playthrough of the series, currently in the middle of Witcher 1. Just CDPR games are SOOOO much better than Bethesda’s that there isn’t a place for comparison. They are art for grown-ups, a lot more mature and reasonable.
So I hope @warhorse will learn from the right approach and KC:Deliverance will be great too; even if fast travel is present it has to let us play adequately without it.