When enemies can oneshot combo you if they catch you unprepared...no it's a fine skill.
I've literally encountered plenty of enemies, say the toads for example, they hit oil, it explodes into fire, 4 man group is on fire, next one spits two poison globs for 30% of health of that character each. By the time my characters get to go, several if not all are below 50% health. Teleporting frog into fire would only cause the fire to become necrofire, which while my characters are standing in it, is a rilly bad idea.
It offers unique options that can be ridiculous at times, but ultimately it's not entirely unreasonable. "Oh no I can teleport away an enemy to an area they can't get down from or so far that they have to waste all of their points to get anywhere in range again" well yeah, there's also tactical retreat, chameleon, the ability to go stealth in the middle of combat by pressing 'c' (same button as usual, if you're not in a cone you can stealth), there's the ability to stun lock people, etc. The stun lock issue is being fixed by requiring double the applications to become effective, which is good as currently in game it's frustrating when a random character summons rain, and then an enemy that just so happens to be holding an air staff slaps one of your characters for a perma 4 man stun from the get go.
You can fly away to somewhere the enemy can't reach you, teleport the enemy or an ally away to such a location, take an object from a hidden location to you or put someone up there, or you can even leap to such places. I'm not saying teleport isn't strong, but it isn't necessarily all that ridiculous.