They expect us to create merchant guilds.... but a max of 300 members (where i guess it will be account bound) might be a little low for merchant guilds...
I personally think they should have 2 systems....
Guilds/fammilies where every character can be member of only one, max number of members could be 300...
And then Merchant guilds which can be like 1000 or 2000 accounts big, where every account can be part of like 5 of these Guilds... which would allow people to trade between different merchant guilds and make money that way as a true merchant...
If they want the Merchant guild structure to hold.... they should not be based on regular guilds, but be something really different