Li Shenron said:I think that most of the problem is because we gamers think too much and read too little
If you look at the PHB Teleport table, the spell requires at least to have a Description to give a chance of working. And then it says: "Description" is a place whose location and appearance the character knows through someone else’s description, perhaps even from a precise map.
Maybe too many people assumes that the name of the place counts as a "Description". Uh, and location doesn't simply mean "somewhere far in the north".
These spells are more controllable by the DM than many gamers think.
I admit that I've never ran or been in a game at a level high enough for Teleport to be a factor. Wait, in one game the players did reach 9th level, but the illusionist didn't really do a lot of heavy lifting with his 5th level slots; it was reserved for metamagiced spells, and I believe Shadow Evocation.