Elder Scrolls Online seems really balanced and a very well-made game already, however there is one aspect I severely question, and that is the teleport system.
Sure I guess it makes sense that a teleportation system would be a quick and easy way to replace the Fast-travel system from Oblivion and Skyrim; but I think that a way to teleport shouldn't be severely made for EVERY location discovered. Maybe to like specific areas, like Shrines, or Holds/Castles/Villages. The general teleport system in-game right now speeds up the game to an extent of making it almost being unbelievable. Look at Skyrim, it had a fast-travel point for every single location discovered, which really seemed to speed up the game for me, to the point were I was able to beat four questlines in a single day.
If you're interested, here's my suggestion;
Make a teleport system that works by sending you to the nearest major City or structure, we don't need teleports every 5 feet, try to space them out.
I can see how this would flaw you with your current way of spawning a group/friend at the nearest safe area. Alternatively you could just spawn them at the nearest village/hold/city.
If the person they are trying to teleport to is in a dungeon or a combat specific area separated from the rest of the world you can just have them teleport in at the beginning of that area.
Hope I don't sound too bashful here, I just think that the teleport system seems a bit of a game speed-up.