Still, I don't really see this as a long standing alliance. Because I don't think Uriel and Winter really interact, until we get to a certain point. I think the alliance, if it exists, probably only really came into existence with the party at Bianca's place - and perhaps afterwards, when Lea's infection was apparent. After which, I assume Uriel and Mab got together and realised: Oh shit, the Adversary very nearly fucked the both of us, didn't it?

I wouldn't have referred to them as a Team, more as a temporary Alliance. It appears that Uriel, Mab and Odin (and maybe others) don't always see eye-to-eye, but they may share a singular common purpose...Harry. But I do like the idea that those three had been plotting something for some time.

My admittedly fairly wild preferred theory there is that Maggie's death at the time of childbirth is part of the Starborn recipe and a willing sacrifice on her part.  I don't believe that she was naive enough about magic to leave anything he could target an Entropy Curse on if she had to escape his thrall, or that if he just wanted her dead it would hit her at that precisely calibrated a moment and not before.

As for keeping her six years, I propose that he is working with her, in helping identify and bring about the conditions needed for a Starborn.

I wonder what Thomas and Harry would say if they heard this theory...

Unless there is some Biological Limitation on the White courts reproduction. Which is my personal theory, because otherwise there would be a lot more of them.

Consider how many women Thomas has been with just to feed, not to mention Justine. Do you think he takes the time to use 'Protection'? I'm fairly certain that WCV have a way of controlling when and with whom they reproduce.

Personally, I am not 100% convinced that it was really Lord Raith who killed Maggie Sr.  Sure, Ebenezer believes it, but then he may well be blinded by his prejudices -- automatically blaming the "drug dealing scum of a boyfriend" for her death.  We don't really know recipe is required for birthing a Starborn, but the fact that Elaine (known potential per WoJ) is also an orphan suggests to me that we can't rule out death during childbirth as being one of the ingredients. 

1) IMHO it is not impossible that Maggie killed herself deliberately to create a Starborn.

2) It is even possible that the mother needs to die with an entropy curse in order to create a Starborn (HHWB-Entropy curse connection in Blood Rites).  Maggie could well have done this to herself.

3) Note also that technically it was Maggie's Death Curse that killed her.

Still, to me this whole planning ahead to produce a Starborn, while I agree that it is a strong probability, has one anomaly -- Thomas. If the UMO Alliance, Lord Raith and the others all planned ahead to create a Starborn...Thomas should never have been born. I love Thomas to death, he's my favorite next to Harry, but his very existence makes no sense.

How do you suppose Mab reacted when Lea told her, "My Queen, I know we have been working with Margaret LeFay to produce a Starborn, however It seems she has not stuck to the plan."

Do you think Mab, or Odin would have been thrilled to learn Maggie was pregnant with a 'Bastard' child?

I'd say that she had to go to someone who was not part of the White Council, and guess that he was the most plausible alternative compared to, say, the Red Court.

I have no strong position on that; my own feeling is that he more likely changed plan when the meeting we heard about in Changes failed, but I do not have anything to argue that from.

Oh, neither; I am positing that he wanted her to have the Starborn child according to the recipe, but to bring it up as a weapon for himself rather than to protect all of reality.

That last part doesn't make sense,  only in that apparently the recipe for a Starborn involved a man more like Malcolm.  So...when Maggie ran away to find him, LR killed her. Admittedly just as she was giving birth to her Starborn child. Why did LR keep her for 6 years? Why didn't he work with her to make sure she had her Starborn child as per the recipe?  Whatever that recipe is. And why did he put her life at risk by having a child with her (someone Maggie's age, there is always a risk that a pregnancy could have complications.  Unlikely,  but not impossible. )

Doesn't the last Starborn predate Mab being in her position though?  When was the Last Starborn active, about a thousand years ago?  And Mab has been WQ since Hastings, was it?  Which is maybe a thousand years ago, but it's also off by 5%.  And that assumes that she jumps right into it immediately.

it is possible that the last Starborn was a fluke,  unplanned,  unexpected.  By the time the Great Powers realized what they had,  it was too late to use it/him. 

Another possible discrepancy:

In Bombshells, Molly notes Justine using that "Little White Card" to rack up considerable expense buying clothes for the assault team, yet when Thomas hands her the card in Cold Days, she doesn't seem to recognize it.

Molly didn't use Justine's card herself,  only saw Justine handling it. One possibility is that, in Bombshells Molly thought it was an ordinary credit card. In CD, she got to take a closer look and learned exactly what it was.

Or, it's a mistake on JB'S part.