I think a lot of information mentioned in the Master Atlas 1 ed. never made it to the newer ones. I always wonder if some of those items/characters/places would change if you were to write about them again.
Hmm, whom are you thinking of?
Oh, that one is sooo easy...
The Loremaster Council Member Yael Ziriv Kari, Page 38 of the Original Master Atlas... She never reappeared.
Then there's the Spell Lists ( well ok, they are available here ), The Isles of Transfer.
There's not much in the 1st Edition Master Atlas about items, but if we extend to the Emer Box Atlas Addendum we have lots of items to play with :
The Starsphere, All the Lord of Essaence items ( come on there's more than Drones and Tya'ar... even if Tya'ar is a fun
deus ex machina to have around as a GM. ) , All the Places of Power that have not been described
My main problem is that there's so much information spread over all the books that it's tough to decide what to choose...
When I was actively playing the group I was playing with considered that in a Shadow World book there was a campaign hidden in every phrase.
( including credits and annexes )
So I'm going to stick to my previous list : Artifacts and Lost Technology, Something New From Somewhere That is Not Jaiman Nor Emer.
( ok, I removed the GC as it's obvious you won't finish it
)