Since Mongoose RQ is set in the Second Age then I doubt if the area of Griffin Mountain will be visited, which is a shame because there is so much going on their in the Second Age.
The Votanki throw off the EWF and start to raid them.
The Dragonewts in their caravan city are destroyed or thrown out.
Balazar comes to found a kingdom, enslaves some giants, builds some citadels, befriends the Votanki and goes of to the Dragonkill.
Bluface is mentioned around this time.
The Vampire of Gork Hills is up to no good.
There is probably some dispute between the Elder races - the humans are said to have set them against each other at this time and fill the gaps left behind.
Cragspider has completed her Uzdo HeroQuest and is worshipped as a deity, although she hasn't got the Black Dragon yet.
Gonn Orta might have founded his Castle by this time or he might found it in the Third Age - I can't find a reference for it, but it would be fun if he were around.
I also can't remember when the elves disappeared from the Elf Sea. Maybe around this time? What caused them to vanish?
What else? The Faceless Statue has left the Throne unguarded. Dagori Inkarth, across the Rockwoods, is stirring.
So, lots to do, but nothing like the Third Age stuff about Balazar.