As we are able to join multiple guilds, one drawback is that you are only able to communicate with the one your are representing.
This means that you can miss a lot of messages, so for example if I’m adventuring with the PvE guild I will miss the chatter in my sPvP guild about forming a group for some tournaments later, or the chatter in my WvW guild about planning a big assault in 30 minutes.
We either need player chat channels to allow more communication between different groups of players. Or the ability to open at least one more guild chat tab for one of the guilds you aren’t currently representing.