So save files are now well over ten times bigger than they used to be? Instead of four pieces of stone being stored as 1,1,1,1 it is now Minecraft.Stone,Minecraft.Stone,Minecraft.Stone,Minecraft.Stone? I smell nonsense.
Its stored as 1,1,1,1, but there is now a mapping table that says 1 = Minecraft.Stone.
Bukkit still uses item ids instead of the names.And thats fairly annoying.