That brings even worse problems IMO. Take for example a guild still had a few members or friends of members that for whatever reason decided to join last minute or otherwise forgot to reserve a name.
Let’s assume all guilds have at least some people in this category. Well, by locking the servers the way you suggest, every single guild is going to have members who are dealing with the disappointment of being separated from some of their friends.
And that would create an epidemic of players who are faced with the dilemma of choosing between their friends and the guild, both of which are hard to replace if you’re already happy with them.
Give them a break. They’re doing their best.
Now that doesn’t mean I think they’re doing a great job. They’re not. Here’s my criticism on how they are handling it: Overcrowded Realm Update – August 21 - #513 by Nuzzerino-sargeras