As a WoW semi-hardcore raider (retail only nowadays), even if this is to happen, it requires firm leadership and the fonts to expand outside the people from the forum here. Guilds in MMORPGs cannot forever relate on a specific list of players, and would normally die much quicker than expected.
Ideally, we need to follow the process CSGO follows if this is to work. Along with that it would require a leader and 2-3 officers (the number is flexible based on various organizing factors). Then it requires people who wanna do stuff, raids or pvp, and that hopefully should be on a steady basis, from forming a raiding/rbg/pvp team to having a steady (somewhat at least) schedule of things being done, to keep the interest of the team alive.
If this can be maintained, then it would be a good idea, to see it happen.