Great list, Kim.
The investigators and LE pretty quickly discounted the ZG persona. Not independently corroborated by ANYONE other than Casey. If the investigation pointed in that direction they would have issued a sketch and asked for the public's help in finding her. That didn't happen. At all. So that answers a great many of your questions IMO.
#35 Jeff Hopkins DENIED being anything more than an acquaintance of Casey and said he DID NOT introduce her to a nanny--by ANY NAME. Don't know if he's helping the family now.
#39 The nature of Amber Alert is to notify millions of people within minutes/hours of missing/abducted children. My understanding is since 30+ days had gone by before reporting Caylee missing, this case did not fit the criteria for the alert.
Those are the only ones I'm certain of. Regret I cannot provide link for Jeff Hopkins info. WFTV.com? Thank you and I have a few of my own:
72. When will the police report--not arrest affidavit--by the first-on-scene officer(s) be available?
73. When will we know what is contained in Casey's 4 page handwritten statement?
74. When can we hear the raw tapes of detective's interviews with Casey?
I suspect these are withheld until the Discovery Phase?