After dragging myself screaming and kicking to the end of this trilogy I'd have to conclude Jay Lake is a light-weight writer who came up with one heavy weight idea and didn't have the expertise to stretch it across three novels. The first book was nearly unreadable, he fluked the second one - that was a fun read - but number three was just dreadful. I am guessing he could be OK as a short story writer - coming up with a few big ideas to drive a plot, but this is not enough to justify writing a long-form novel - let alone a trilogy.
One of the biggest problems with this one was its Attention Deficit Disordered structure. I am guessing that after book 2 his fans said they loved the point of view alternating between three characters. Lake decided you can never have enough of a good thing, doubled his POVs, and halved their effectiveness. Many of the chapter sections are less than a page long and few exceed two pages. This is not enough space to write a scene that involves a reader emotionally. Kitchens and Wang really don't add anything meaningful to the story - as characters, they are barely ciphers so it's hard to know why he went down this road. The fragmented structure only highlights the deep flaws in the plot.
The main plot device in this series is literally a deus ex machina - the "gleam". With her magical clockwork devise, Paolina can do literally anything she thinks of, so the plot is utterly arbitrary. One moment we have life and death airship battles, the next she remembers she is the little finger of god and can teleport the opposing team half way around the world. This is the superman without Kryptonite problem. The only thing you can do with this type of "drama" is to give the protagonists some emotional problems to wrestle with - but when you are limited to scenes of a page, "character" is reduced to a cartoon trait. Lake feels he needs to mention the traits once per scene. Paolina hates men every 12 pages, Boaz's gut quotes the bible out of context, Wang chases Childress, Childress pretends she's a mask, Gashansunu does something cryptic with her Wa, and Kitchens fiddles with dusty bowler and reads his cyborg queens soggy note. Add random scenery and repeat like clockwork.
This arbitrariness is also found in the connections between the characters. We are told Boaz loves Paolina, Wang is attracted to Childress, al-Wazir is deeply fond of Paolina ....the list goes on .... but we are never given a scene where we get to see the dynamics of these relationships in action - it's all tell and no show. When you couple this emotional superficiality to a totally arbitrary plot, it makes a deeply foolish novel.
There are flashes of interesting writing - Lake's prose is descriptive, at it's best when describing big dumb objects, and there are a few memorable scenes such as Queen Victoria in her Steam Punk sarcophagus. I'll give my one star for dropping a (yellow?) submarine on Blenheim Palace - that was almost worthy of a Terry Gilliam Monty Python sketch.