no, you are turning a situation from where you are both neutral, into a situation where you get damage, and get to go into your game after and don't have to deal with his projectiles. The risk reward is against him as well throwing a projectile, if he does it right he chips fuck all damage, if he does it wrong he gets full combo into whatever happens. It's about making smart plays, from both sides. TP is an excellent tool, use it smart.
Not really, because you can't react to projectiles with a 35 frame teleport. It has to be a read. So with that in mind, the risk/reward favors the opponent.
His risk is that you might make the right READ in his projectiles, and without meter that's 5 damage taken he's risking, while the reward is him building meter while doing damage and keeping you zoned out.
My risk is making the wrong read, and getting full combo punished (with or without meter, both are -24/-25). While the reward is not letting him get a bit of meter and damage. But he will get even more damage if I'm wrong. The only time it's even a "threat" is if I have meter, but I still have to make the right read and commit to MB. So I'm sacrificing meter, which when it comes to SG, you very rarely have, and risking making the wrong read just so I don't take a little sliver of chip damage.
No matter how you look at it, the risk/reward does not favor going for the teleport. It's inly useful in very very specific situations and of course, in lag/delay. I mean it's pretty easy to bait out the teleport and full combo punish it.
Anyway, with that said, it doesn't really matter. I've already said I wouldn't even care if her teleport was removed completely. The whole "the threat of it is better than the TP itsef is alright", but no good player is afraid of taking 5 damage and they aren't even really concerned with perhaps taking 280 or so if you have meter. Because there goes my only meter and now I can't do anything since she needs meter to do medicore damage AND to be safe. And like I already said, she has an incredibly hard time building meter.
The teleport is a non issue. It's not good enough and I'm okay with that. It doesn't need buffs before her frame data. And if her frame data gets buffed it matters even less. I'd much rather be safe without gaps than the teleport being good. Teleport attacks being good in back to block games is kinda nutty anyway.