In D3 you put a huge cooldown on that skill, you nerfed it so much that many wizards dont even use it, using more useful abilities, I wonder why there is no rune or passive skill for having TP without cooldown. BTW, Illusionist doesnt work in most cases, especially when there are no mobs.
More over while playing with that skill, I found so much stupid bugs when you are unable to tp, in some cases he hits some invisible walls so you cannot get it over using tp. Or teleport radius is so small, looks like a half of screen or less.
I prepared screenshots, please enjoy: