EX Tele? Hell yeah, that shit is broke. Pretty much all the Tanya mains agree it needs to be toned down.
Regular tele? not really. It's good but it can be easily punished and stopped by smart players. This whole invincibility argument is really stupid because there is no other move that a character disappears off the screen and doesn't have invincibility. Ermac and Mileena's disappear both have invincibility, all the other teles in the game have invincibility. I don't even understand what people could possibly gain by removing the invincibility, if you read her teleporting already you can just njp, d2, air to air etc. It sounds like you guys just don't have the timing for punishing it down.