I know we've got: MG Reading List and: MG Members on Goodreads but I'm looking for some specific recommendations.
The oldest girl is close to finishing Marissa Meyer's "The Lunar Chronicles", so we're looking for the next series. The big problem is that many of the books that are "on topic" theme/plot-wise are too adult socially.
She's read all the typical "young adult" series already: Rich Riordan's Percy Jackson novels & the Greek spin-offs, Hunger Games, Harry Potter, Spirit Animals, The Warriors (the one with the cats), etc.
She'll love Dune, when she's older, but concubines, sexually hedonistic Harkonnens, selective breeding Bene Gesseritt (we won't even talk about the Honored Matres yet), are not the way to go yet.
I looked at the Heinlein juveniles, but many haven't aged well. Podkayne of Mars isn't bad, until it ends in an essentially "She should have stuck with the boy" ending (unless I can find a copy with the original "valiant hero dies" ending. The Menace from Earth has it good parts, but there still too much focus on "gotta get the boy"/female rivalry. And the later stuff, that does better with the female characters, is definitely too adult. Friday will be good, just not for about a decade.
I know these themes are "realistic", but we don't need to focus on that crap now, and, most importantly, she doesn't want to either. Her comment about Divergent/Insurgent was, "It's like Hunger Games, but with romance and kissing. It's for kids that like Twilight."
I thought "Clockwork Angles" would be great -- it's spot on theme/plot-wise (finding a happy medium between enjoying the now vs. planning for later, excess-order vs. self-serviing-anarchism, embracing the suck for something you want down the road, etc.), but there was still two "she took him to her tent and made him a man" segments that were inappropriate.
We want the as much organization as needed, but no more, self-reliance, self-determination, dream-big, multi-curturalism, proud of your heritage, but work as part of a mutually-beneficial-group, take care of things yourself, but don't be afraid to ask for help, etc. themes from a lot of Heinlein's works, but none of the fetishist, pre-Oedipal, examples of sexual freedom, females still need a man to truly fix things, etc. that exists in a lot of his later works.
Maybe it is time for "Tunnel in the Sky", 'The Moon is a Harsh Mistress". At least in the latter one, they realize that the self-aware computer system is really female
Of course, anything with cyborgs, robots, engineering, fixing problems that nobody in charge sees, etc. are pluses.
You're talking about a very adult sliver of sci-fi, it's going to be hard to find something for an 11 year old that isn't in the Divergent vein.