Very intresting read, i liked how you pointed out that one vial in Draconia that could had been added to 'guide' us closer to the ending of the mystery.
Not so long ago a friend of mine told me about this book in the Ankrahmun Temple Library, he said it gave the clues about what items and how it would go about it. He sadly din't exactly remember the names of the items (his english wasnt really smooth so he forgot) but he said what i believe was 5 items (2 of course stacked), you can find the book here by yourself:
•POSSIBLE SPOILERS•
By the powers that remain and the powers of old,
by the wisdom of the scarab and the kiss of the scorpion,
by the infinity of the sand and the eternity of the mountains,
by the life-giving powers of water and air,
by the death-bringing powers of fire and lightning,
by the blessing of death and the revelations of undeath,
this corpse shall rise from the grave,
this corpse shall break the shackles of life,
this corpse shall seek wisdom,
this corpse shall serve the one.
Praised be our pharaoh!