Last year, Dynamite Entertainment launched Kickstarter campaigns for omnibus-style reprint collections for the old Gargoyles and Darkwing Duck comic books, both of which were quickly fully funded and have now started being shipped to those who pledged for them. But there's something I find inconsistent between the two different series. Here's a quick rundown of what's reprinted in those books:
Gargoyles
Volume 1: Classic Years - Every issue of Marvel's Gargoyles comic from 1994
Volume 2: Clan-Building - Every issue of SLG's Gargoyles comic from 2006
Volume 3: Bad Guys - Every issue of the spin-off title Bad Guys
Darkwing Duck
Volume 1: Darkly Dawns the Duck - The 4-issue "Darkly Dawns the Duck" comic adaptation and every Darkwing story from Marvel's 1994 Disney Afternoon comic
Volume 2: Cowl & Fowl - Every issue from the 2023 Dynamite run
Volume 3: Heroes & Villains - The Negaduck and Justice Ducks mini-series
Did you notice anything missing from those lists? There's actually two different answers, but I'm going to focus on the big one here. As you can guess from this thread's title, the most noticeable exclusion from the omnibuses is, of course, the 2010-11 Darkwing Duck revival comic published by Boom! Studios and its short-lived 2016-17 continuation by Joe Books, plotted by Aaron Sparrow and drawn by James Silvani.
It seems like the Sparrow/Silvani run has fallen into obscurity following the advent of the DuckTales reboot, and it certainly didn't help that Dynamite opted to completely restart the comics over from scratch instead of continuing its cliffhanger-filled storyline when they got the license. But even so, this series of omnibuses would have been a perfect opportunity to reprint those stories. I already own The Definitively Dangerous Edition from what is now a decade ago, and I still would have been willing to upgrade to a hardcover version! They could have easily devoted the second and third volumes to the Boom! and Joe Books stories, respectively. But instead, they just re-reprinted their own Darkwing stories, which honestly seems redundant (and possibly even scam-like) if you ask me, due them having already put out non-omnibus hardcover collections for those particular titles! And given that they're calling it a "Complete Comic Collection", it's probably also false advertising.
Just why did Dynamite not take the opportunity to also reprint the Sparrow/Silvani run? Did the Joe Books run sell so poorly that Bob Iger now wants to pretend that Disney never had Aaron Sparrow on their payroll? I have been told that Disney supposedly doesn't fully own the the stories made for the Boom!/Joe Books run, due to them having sold their stake in Boom! Studios to Penguin Random House last year. But that doesn't really make sense to me, because 1) IIRC, Disney having a stake in Boom! Studios was a result of them buying out 20th Century Fox in 2019, 2) The Definitively Dangerous Edition (in which they reprinted most of the Boom! series) came out in 2015, well before that acquisition (not to mention that IDW's Disney Afternoon Giant title from 2018-19 was nothing but Boom! era reprints), and 3) Tad Stones' "Untimely Terror of the Time Turtle" from Darkwing Duck Annual #1, which introduced a new comic-exclusive villain, was recently reprinted in Fantagraphics' Disney Comics Around the World in a Hundred Years. So I think it's more likely there's some behind-the-scenes kerfuffle and/or pettiness that's preventing Dynamite from reprinting the Sparrow/Silvani stories, and not simply licensing problems.
By the way, the other answer to the "what's missing" question is the comic stories for both shows that appeared in Disney Adventures, but Fantagraphics has at least been reprinting some of Darkwing's stories from that magazine. No such luck for the Gargoyles stories in that case, though.