Yes I wasn't going to post this but hell what...
Stars already kill Shannox on Heroic like 15 minute ago.
How?
FYI: Faction Change now resets your raid lock. Yes, Stars Faction Change-d to get a new raid lock and killed Shannox on Heroic and it's 12am here so if they raid as normal, we may see another Heroic kill in the morning or EVEN Ragnaros down by the weekend.
Back in ToC and ICC times some guilds FCed to get a free 50 attempt, which wowprogress didn't consider it right, but since the limited attempts system is gone, I don't yet know what do they stand on this.
Gonna post this on the official forums.
EDIT:
Horde guild page: http://tw.battle.net/wow/zh/guild/水晶之刺/Stars/, all main raid members gone, with guild news disabled
new guild on Alliance: http://tw.battle.net/wow/zh/guild/水晶之刺/魔獸軍團 all core raid members in, with guild news also disabled
EDIT2:
You have to consider it that patches go live 2 days later than US on TW servers, and myself consider it as a clever use of game mechanic, but really, not encouragable.
EDIT3:
Faction Change is now in maintainance across all regions.