Wow, what an epic bump! I've never read this thread before - it's quite old... I only read
A Less Perfect Union and Seeds of Dissent a few months ago, and I haven't read Places of Exile yet (not because of the lack of interest, but because I've been distracted by other stuff)...
I really enjoyed both novellas I've read. I love the concept of various alternate universes, and these ones really got the best out of it. Both of them presented very interesting different versions of Earth's future that is completely different from the Federation of the prime Trek universe. The only criticism I can see leveled against them is the 'small universe syndrome', but that goes for pretty much every Trek lit work, and alternate universes would never be nearly as much fun if they contained original characters. It's the differences between the same people in different universes that are really interesting. (Though I could live without the hint about the female Romulan Commander... though this could still be another Romulan in a short skirt...

)
A Less Perfect Union perfectly blended ENT and TOS characters. T'Pol in particular was wonderfully written, so was Kirk, and it was great to have the Romulan Commander in the story, and interacting with Sarek.
Seeds of Dissent was a lot like what 24th century Mirror Universe would look like if the shows had stuck to the original idea of the MU as a universe where Humans are the ruthless conquerors and oppressors. (And it's much more interesting than the post-
Crossover MU which basically became about human rebels vs evil Cardassian/Klingon empire. Which pretty much defies the purpose of an alternate universe.) Only in this case we get a backstory of how and why it turned out like that, with the theme of re-writing history.
re: if the Terran characters look the same as the people we know from the show - the novella itself makes it clear that they do not. Not only are they all supposed to be taller and stronger, but Bashir is described as having
blue eyes, and all the Terrans are supposed to look not just exceptionally strong, but somehow physically more
dense. I'm not even sure what that would look like. But it only makes sense that they couldn't look the same, after generations of selective breeding and genetic modifications. It's still interesting that they all have somewhat similar personalities, however - i.e. I could see them as versions of the people we know: Bashir is arrogant and womanizing but idealistic, O'Brien is a sort of everyman of the world of Augments (naturally, an everyman of that world is a lot more ruthless and hateful), Sisko is described as a man of a terrifying temper, and Picard as a man fully dedicated to his sinister duty and goals.
The one thing that did really bother me was Ezri Dax - especially the mention of her previous hosts, which happen to be the same ones, and in the same order no less (Joran, Curzon, Jadzia). I'm not sure she even would have gotten the Dax symbiont in this universe, since she only got it in DS9 by accident. And it's quite unlikely that the symbiont would have passed from Joran to Curzon to Jadzia to Ezri, despite the vastly different circumstances. We'd have to accept that Jadzia just happened to die early in this universe as well, and that Ezri somehow happened to get her symbiont.
While reading Trek lit, it is often fun to imagine what the novel or story would look like if it were actually filmed, with the same actors, even if it's totally unlikely, or even impossible in some cases. This is especially the case with alternate universe stories, and I had many moments like this reading SoD... imagining Kate Mulgrew and Nana Visitor arguing and exchanging experiences as Shannon and Kira, Marc Alaimo playing a good guy for once, Nicole De Boer playing a very different Ezri (from both prime and MU Ezri), etc. But then I kept thinking: wait, I can't really imagine Siddig, Meaney, Lofton as Princeps Bashir, Optio O'Brien or Jake Sisko... without the use of CGI. (Considering the 'density' comment, CGI would have to be used for all Terrans...

)
Thanks for the comments, Trent...
Once again, there’s great attention to detail, whether it is the collection of Voyager guest-stars aboard the Botany Bay, or characters like Sarina Douglas and one Doctor Amoros (the original name for Bashir’s character, for those who don’t know) turning up on the Defiance.
Huzzah, someone spotted the Amoros ref!
I had no idea! And I thought I knew a lot of trivia about DS9.

I was wondering who this Amoros chap was based on. I can't believe that they were actually planning to name him "Amoros" - the amorous doctor, LOL
Although, I must say, even with this being an alternate universe and all, I couldn’t help but be discomfited by the idea of Kira and Dukat as a couple. Yeech.
That is
exactly the reaction I was aiming for.
Heh.
Well, then you failed with me, since I wasn't discomfited by it.

It makes perfect sense to me. The canon characters always had chemistry and a weird sort of... kinship? that seemed to stem out of some similarities between them - there were times when Dukat seemed like Kira's dark side, and one could argue that The Intendant, as originally conceived in "Crossover
" (without the silliness added in the later MU episodes) was a lot like Prefect Dukat... while Dukat occasionally showed glimpses of someone who could be a freedom fighter like Kira ("Return to Grace"). Ron Moore said that Dukat had potential for goodness or even greatness and that this makes it even worse that he made the choices he did and committed so much evil. So, I can see Dukat in this alternate universe being the opposite of prime Dukat, becoming a freedom fighter in a universe where Cardassians are oppressed rather than oppressors; and I can see this Dukat and Kira being lovers and fighting together. Kira is, incidentally, the only person in SoD who is not that different from her prime universe self, it's just her allies/friends and enemies that are different, but that's due to them rather than her - but I was quite happy with that, as we've had more than enough of 'evil Kira' in the MU. (Too much, since she has rarely been written well.)
Speaking of which, it's great that SoD complete the quadrangle of alternate universes with contrasting relationships between Bajorans and Cardassians:
In the Prime Universe, Cardassians occupied and oppressed Bajor.
In a parallel universe from TNG "Parallels", Bajorans occupied and oppressed Cardassia.
In the Mirror Universe, Bajorans and Cardassians are allies, together oppressing Terrans.
In the
Seeds of Dissent universe, Bajorans and Cardassians are both oppressed by Terrans, and fighting together against the Khanate.
BTW, I haven't read any of the Eugenics wars books, so I don't know who established that "Khan" is Noonien Singh's title rather than name, but in any case, I think it's brilliant.