Leaving f(x) and "Focus on Acting"!!!

On August 7th, the managing agency SM Entertainment has publicly announced the leave of Sulli by saying
"After consulting with Sulli who is minimizing the schedule and having some rest regarding the future plans,
they decided that Sulli will leave f(x) by respecting Sulli's opinion and focus on the acting."

Consequently, f(x) will go on with the four members- Victoria, Amber, Luna, and Krystal.
Regarding the leave of Sulli, the netizens commented by saying
"Yesterday was Jessica's leave but today it is Sulli... SM is in deep trouble.",
"Sulli is finally choosing to leave.", "Can f(x) now stage a come back? It is good!" etc.