While its possible i don't see why they'd bother. Its pretty easy to get a ton of soulsand and if they made it craftable then the price would drop like a rock making it even harder for diggers to make money.
there's no way that they would do an end reset with all the stuff people have setup there. the only plausible thing would be a resource world but having 6 worlds running at once may cause issues for the server.
A) Seems useless because most of the nether is still untouched, but it'd be cool.
B) It has been mentioned here.
C) Create a new suggestion for the "End Resource World", only way to get proper attention. (Check for a duplicate though because I'm sure someone mentioned it with asking for a nether-reset)