Ok lets put that one on the back burner for now.
We can't make membership of a tutorial guild mandatory. There are many valid reasons why a player may not wish to join a guild ranging from religious to plain shyness.
Secondly how to know in advance how many of these sort of guilds would be needed. Thirdly there is catering for those who have very little English. Then we have the problem defining the exit conditions, hence me asking about loot spots.