As reported by WoTLK Classic Gold WoW Content Creator MrGM (via Wowhead), joining an instanced dungeon, or raiding on the PTR in conjunction with a member from the opposite faction, while having an official guild charter allows for the formation of a cross-faction-based guild. This is because the game is for all purposes treats players using the cross-faction option as if they belong to the same side within an instance. This permits the new constitution to be signed only by the members of the other faction. It appears that only those from the opposing faction who sign up in this method can be accepted into the guild, and the standard guild-invite feature available to members belonging to the same faction.

The issue will likely be addressed prior to patch 9.2.5's full release, however it is a sign of a feature that many players hope will one day be a realisation. It wasn't long ago that forming a group with people from opposite faction was merely an idea that was only a pipe dream However, the ability for players of both Horde and Alliance to Horde or Alliance to be able to interact with a common goal is coming soon. The idea of taking cross-faction support further, allowing cross-faction guilds is the natural next step.

However, it may take a while before Blizzard is willing to cross that bridge. According to WoW director of games Ion Hazzikostas has said in interviews, the doors remain open to cross-faction guilds. But Blizzard will follow feedback from players and be sure that it is certain about its decision since there is no way to modify the feature after those restrictions were removed.

Patch 9.2.5 has not yet been given an official release date, but it is anticipated to be released shortly. If it is released it will come with cross-faction support, as well as brand new story content, which will provide an end for wotlk classic Season 4. wotlk classic expansion. The expansion will also launch wotlk classic Season 4 that will reuse older raids of wotlk classic and Mythic Dungeons from earlier expansions such as Legion as well as cheap WOW WoTLK Classic Gold Warlords of Draenor to make them relevant again.