My guess for the First key of power would be Sextant of the Worlds, others being Artifacts used by GW during DC incident.
That was held for the Azzies. They had a year to clean up on the whole Blood Magic thing, but I don't think D would have promised an item to two parties, even if he was making a point that they were unwilling to do certain things. (Stop using Blood Magic, and reveal their leadership's backgrounds, respectively.) He had more than enough baubles to back up such a statement, instead of bluffing.
Right. That still leaves a lot of unanswered questions.
The Misguided Six. Who were they, are they still alive, did they get their pay-out? It's a quarter-million nuyen, which, for his Watchers, is probably chump change, but for Runners, having that much just dumped into your lap means a nice, shiney attack helicopter to launch retributive strikes on Toxics and Magical criminals in. Risk-free pay like that would mean a lot, depending on just who they are.
The vaccine is probably a defunct point. I'd love to know why a mana-level-sensitive injection like that was intentionally sabotaged, (Was his Will tampered with?) but frankly I'll just let it go.
That Azzie CEO Juan, who vanished.
Where in the seven blazing blue hells did he go?! Deep metaplanes? Time travel? Dead? Was he an illusion that was cancelled out by the box, leaving Aztechnology bereft of a perfect puppet?
Will the Matrix Monocle be forgotten, or will Xerxes release it in 5th Ed? Given the increased distance between SR and ED, this could have been ret-conned out, or left for dead?
What is in those boxes, that D was so sure he needed to have a raging inferno prepared for their destruction? Anti-Horror weapons? Caged Horrors, weakened by some previous encounter enough for the furnace to finish them?
I'd love to hear theories as much as fact. I've got an easy dozen other bequeaths to mention that raise a few eyebrows, but they can wait. Go ahead, channel your inner Plan 9.