Menkeroth
A Knight of Blood
I hate repeating anything already said, but... You should always try to have maximum amount of information before forming the opinion, not after. I hope you will understand that... in time, maybe. Now just read the Grand Alliance book (for Death, of course). It's not that hard, I can assure you. Read also Balance of Power (not to mention the Everchosen book, since they repeat the known info here and there, and there is info on how Archaon fought Nagash as well as in the Mighty Battles). When we have our book for the Soulblight, it will be much better. There were no all books from the start in FB, you know. Or maybe not.
All the realms are vast. Vast. Beyond imagination. What kind of map do you expect? Like the Earth globe? Dozens, if not hundreds of small maps, like now? One huge map across the whole 300 pages book? AoS is D&D made by GW manifest, how they perceive it. D&D, MtG and Moorcock. This is one of the reasons it's pointless to have a one map. Surely you can comprehend this as well as the time comes.Like the map. It can remain mostly blank. And just point out where territories on the same plane are in relation to each other and such.