What exactly is the use of the Feedback change (Mesmer)?
If this change was made to make feedback easier to use (Because it can’t bug under the map anymore) – I guess everybody who doesn’t know that feedback can bug without target and therefore doesn’t watch out when using the spell would probably have auto target ticked on in options, so it can’t even happen to them that they cast feedback without a target.
I don’t know any situation where you could exploit sth by placing a feedback where it shouldn’t be able to be placed, so there also no use in that direction.
The only effect I see is that Egg Blocking / Deboofing @ Triple Trouble is now getting hard with a mesmer, and I don’t think that this was the intended effect when feedback was changed.
Sincerly,
a (former) mesmer egg blocker