Rurik said:
Very Detailed Settings with Adventures ala Griffin Mountain, Pavis/Rubble, Sun County, etc with appropriate long form Cults, npc's, Maps etc.
These are the supplements that made Glorantha great. The game needed the broad overview supplements (Gods of Glorantha, Genertela) of the early AH game to flesh the world out as a whole - note that the early Mongoose releases are similar to these - but the game suffered when that was all that was available. Hence the term RQ Renaissance when AH started releasing supplements like Sun County and Dorastor.
Did I mention long form Cults?
And a Kygor Litor writeup would be nice.
Hmmm. I was thinking of sending in another proposal to Mongoose along some of these lines.
IMO, Long Cult writups should be reserved for setting/regional books. The reason I did not go with the long writeup was simple space. They chew through an amazing amount of page count. That said, the very sterile layout in Gods of Glorantha is equally annoying as it leaves no room for any sort of magical exceptions, cultural baggage, or good old fashioned Gloranhtan wierdness. The format I eventually used was more akin to that used for short-cult writeups in HeroQuest.
Using a shorter style resulted in my writing up over 100 cults, many of which have never been given an official RQ treatment.
The intent was to use a mix of adventurer-friendly cults (Orlanth, Veldang, etc), mixed with hostile and adversary cults (Maran Gor, Zorak Zoran, Yigg), and the cults followed by the everyday populace (Barntar, Bisos, Oria). And I threw in a few cults for the loony bloodstained crowd - such as Shargash. And of course, some bits of Gloranthan Wierdness such as Caladra and Aureleon, Heler, and the Cogs of Zistor. Since Robin Laws pointed out to me that there were very few Dara Happan cults that were accessible and fun to play so... we get some of those too.
More later - after I have a copy.

The 2nd age is a lot different than the 3rd.
Jeff