First nice job with the multiple spoilers, I didn't know that was possible!
I like the idea of Federation ships having cloaking devices. I actually feel the moment the Romulans allowed the Defiant to have a cloak (and this might be Shatnerverse, but his USS Monitor in a book has a cloaking device too). Maybe since the Romulans were our (the Federations') allies against the Dominion, maybe the treaty outlawing cloaking technology on Federation vessels should be null and void, they after all put one on the Defiant and said it couldn't be used in the Alpha or Beta Quadrants but only in the Gamma. What did Sisko do? He used the cloak in the Alpha and Beta Quadrants still.
As for Star Trek books, I like the Destiny Series and A Singular Destiny. I like the new books except for the ones for Star Trek Enterprise. I happened to like the last episode and the books change it with both the Romulan War and with Tucker still being alive, plus the Enterprise books take place in 2155/56 but the last episode (even on Star Trek's official site) says it was set 5 years after the events of the episode Terra Prime (2155) and 10 years after the NX-01 Enterprise was first launched 2151. Both point to the last episode being 2161 as the year, the correct year the Federation was founded, what about the Coalition of Planets from 2155/56 - 2161? Either way I see a flaw in the Enterprise Era books, so called "hoax" death isn't fitting to the year being set in Enterprise's final.
Other than that, other Star Trek books are good and I can't wait to see more after the events of the Destiny Series.