I'm thinking about how to use a Witcher (yes, from the video games) style of teleportation. From what I recall the teleportation itself wasn't much of an issue, as it could take them pretty much anywhere they wanted to got but rather it took quite a bit to set up.
Given that, I'm thinking that such magics would require additional time such that it could not be cast in combat and would also require expensive (single use?) components that had to be gathered and assembled before hand. The spell is obviously cast via a form of Ritual Magic.
I'm definitely interested in using such a concept to limit the flexibility of teleport within my campaign. NOTE: my campaign caps out around 10th level for NPC's so there are not many casters around who can cast such spells anyway compared to other 20 level campaigns.
Just some thoughts i'm throwing around. What do you guys think?