I definitely think they should. Unfortunately Sway has more important things to do right now. Besides other server issue related things, he also has his own personal life. Reopening the nether is in my opinion not the most important on the list.
Yea Sway is a Full time college student. You got to remember that, but, the NETHER coming back would be great, fun, and a profit for everyone.
I definitely either want the nether or at least a dropped price on quartz. But I personally want it to be like how it was before where it was one big nether rather than personal nethers.