Guild Wars 2

As you know, when the silver-fed first came back, it was unviable since it cost 1s per use, compared to its current 60c use.
But, then it was updated to be the same cost as a master’s salvage kit! Hooray! its useful now.
BUT WAIT
Anet decides to make it limited edition and soon takes it off the gem store :\

Any chance of it coming back soon?

Anet wont tell you, however there are enough precedents to confidently say it will come back at some point, if only for a short period of time.