Top Guild on My server Disbands For Cata

So, recently the top guild on my server fell a part because they are done with this expansion and feel cata isnt gonna handle being as hardcore as they want to be

Q u o t e:
I decided I no longer wanted the responsibility of hardcore management in a game hellbent on becoming totally homogenized and casual

- The Guild Master



is cata gonna really tear top end guilds a part? has this happened on anyone elses servers?