One thing I struggle with is finding any sort of good recommendation based on a Star Trek book. On Amazon, it seems like people who buy one Star Trek book are only buying other Star Trek books because that's almost all that shows up in the sections for other customer buys and views. I used The Eugenics Wars Vol. 1 as an example, and the only non-Trek choice I saw was Greg Cox's Court of Owls novel. On Novelist, the other choices were derived from books that are compelling, plot-driven, and feature genetic engineering. I can see why the book was tagged like that, but the genetic engineering was not the main draw of that duology.
Is there a great non-Trek recommendation thread, resource, or community that anyone knows about? If not, would it be useful to have a thread where we say what Trek books we love most and why, and other people recommend some non-Trek books with similar attributes?
This struck me as a useful idea for a thread - I know a lot of you are voracious readers of everything!
If you know of non-Trek novels that you would recommend to a Trek fan, please post these ideas

(if there's been a thread like this in the past, please link to it as well - thanks!)