Splork warned a while ago that the levels for the newbie graveyard were going to be changed due to players gaming the system and leveling characters to 15/20/20/etc. The change has been made and it will be live soon. However, rather than making it the same as hometown (15/10/5/1/...) I've changed it to all 15s. So if you've got a 16 in any class, the graveyard is no longer going to be an option for you.
In addition, I have changed the guilds so that you can not level a non-prime class higher than your prime level. You can still level your non-prime classes in whatever order you want (tert can be higher than sec, oct can be higher than sep, etc) but none of them can be higher than your prime level. Choosing a primary class should have some meaning and I think this gives it more.
I doubt this will affect very many of you and we didn't follow up on it sooner because people weren't exploiting the cemetery. But recently I saw someone doing this, so now the changes are coming.