I don't really agree that is a "must have", at least not in classic mode (not that we've seen honour mode yet). The game is not very hard if you are patient as it is now. However, the topic is about it feeling "must have", and if it does to you, then you are likely to spend a single point in Aerotheurge to get it.
I think this is the biggest problem right here, and in general, not just for Teleport. You can just put one point into the skill category, and you can use pretty much any skill in the game for it. I did post above that the devs could look into nerfing Teleport, but all that range limiting stuff for just this one skill is just conjecture, and would likely be hard to implement in a balanced way. If anything, it should be BUFFED to allow you to not hurt allies, and to be able to use it on yourself (the caster using it), but in general, this whole design principle where you can access most (if not all) skills with a single point invested should be reexamined. Maybe teleport should cost 2 points in Aerotheurge, seriously, and look at other skills as well.
