That said I'd prefer if ICE would do this for Shadowworld as well as I prefer the setting.Plus it would be a great intro to RM & SW for those who might be hesitent to buy the RMC core books & SW master atlas .I'd buy a RMX/Shadoworld book if ICE published it.That's my $0.02
Seconded!
Bundling an updated version of RMX plus additions with a Shadow World sourcebook seems like a good idea that could benefit both RM and SW.
I hear there is a sourcebook in the works right now, called Emer III...
Maybe you could even consider bundling RMX with Emer I+II+III, if Terry Amthor agreed.
With updated RMX spell lists to at least level 20, and maybe somewhat higher character stats... should work.
Anyway, the word "Kulthea" sounds so much better than "Cyradon"