Fast travel is always optional, no matter how it's implemented. Case and point: I never use it in Oblivion, I walk or ride everywhere. It gives you a sense of scale and adventure and an opportunity to discover new things. Same in Fallout 3 actually.
Personally, I think they have no choice but to add fast-travel since the previous game had it and the consolers who were introduced to the series via Oblivion will throw a fit if it is absent.
The Consolers?
What is the context of fast-travel? Is it a spell like mark and recall? No. Is it a transportation service like a silt strider? No. It completely breaks the illusion of the game with a feature that is tantamount to cheating. Breaking the forth wall I think is the term used.
It's easy to say, don't use it. The problem is since it is there quests are inevitably going to be designed around it in which the developers may think 'We'll make this fetch quest in the middle of nowhere in a real difficult to get to location, since the player only has to make the journey once it isn't too bad'. What about the players who don't want to fast-travel, they have to make the journey there and back. And are they rewarded for this extra effort? No. Fast-travel rewards laziness, and those that go out of their way to explore the game are disadvantaged.
There's no correlation between having fast travel and designing quests around it, besides those quests were in Morrowind as well. If you don't want to use fast travel, than you don't care about making the journey there and back. I don't use fast travel all the time in OB, I don't understand what's wrong with FT rewarding Laziness, Exploration
is rewarded, with what you find, that which the FT traveler will not find,
unless he starts not using FT.
To those that want fast-travel, what's wrong with limiting it to between towns? You still get to move around quickly and yet the sense of exploration and distance in the wilderness can be retained.
I've got nothing against limiting it between towns, although I think you lose much the convenience, I would rather have it tied to mounts in addition to it having a chance of random encounters. OB did go overboard, but I think it was more because there was not an alternative for those who wanted a more immersive system. I still feel your argument is flawed though, because the sense of exploration and distance was also retained in OB, all you had to do was not use fast travel a single time.
There are two real points against OB FT:
- It's unrealistic that you can tread across the country, on foot, without encountering an enemy.
- It neglects an opportunity for the player to roleplay, because the FT isn't recognized by the world.