I was thinking about this. EVERY new player gets assigned a random open guild. This can also be means of tutorial or getting to know the guild system.
Or if not auto assigned, just teach them how to join one and what are the benefits when they start.
For a new player that is yet to own any SPS then guild rewards would have to be one of the fastest ways to earn SPS. So I was thinking that to make it even more attractive for new players to join guilds early a requirement that the participating guilds delegate a nominal 200 SPS to the new entrant to help them on their way would really help. So when a new player arrives they need SPS and all they have to do is join one of those guilds and wow there is the easiest 200 SPS they will ever get. They would of course lose it if they were to leave or get kicked.