Honestly the value of the ability for ap spent is way higher than any other ability we have access too at the moment. There is never a point in the game where taking teleport over some other option is a poor choice. This alone should be indicative of it's absurd strength both in combat and out.
In it's current state if you had to invest quite a ways into aerothurge to get it then it might be fine, however if it were to remain low level honestly it would still be too good at a quarter of the current teleport distance. This might be an interesting chance to have utility values scale with attribute level. Having the teleport skill get distance scaling based on aerothurge level for example.
