I don't think there should ever be fast travel unless it means riding on the back of a mount.
"part of what I want from CE is to incorporate more MMO elements than survival games tend to"
Agreed, because what would be REALLY GREAT is if Conan Exiles can transcend the label "survival" game, considering most games that call themselves "survival" games are just unfinished "sandbox" games, and actually label itself as a "sandbox" game. If one considers that the difference between a "survival" game and an MMORPG is that there is no plot lines that are being forced upon the player, or NPCs with big yellow arrows pointing down from the sky over their heads, then there is still a lot of room to grow and still retain the label "survival". Consider that SWG, the greatest MMORPG of all time (IMHO) had very little in the way of the modern MMORPG elements, at least until the botch-up.