Bungo Stray Dogs (S5): I only got into this a couple of seasons ago because none of the teaser descriptions really give it justice. It follows a group of young adults who form a "detective agency" to keep the city safe from the mafia, and slowly escalates from a mystery show to flat-out supernatural warfare (the United Nations played a pivotal role in a recent subplot). My favorite bit of flavor is that most of the characters (and their talent) are named after famous authors and their works. I picked up one book to read already. Everyone is ridiculously overpowered to the point that nobody is.
I decided to give this a shot since you made it sound decent. I'm only one season in so far, and maybe it gets better down the line, but right now it seems pretty terrible.
First of all, we seem to have reached a point in anime where warring factions populated by superpowered individuals simply spring forth from the ether with no background or even the faintest explanation, and absolutely nobody questions it.
I might be able to overlook the lack of explanation if it at least led to some interesting superpower matchups, but instead we see every conflict resolved by simple overwhelming martial prowess, even when the seemingly endless hordes of faceless thugs with military grade assault weapons are involved. And of course the martial prowess that every key figure possesses is just as unexplained as the rest.
Also, at no point has this show made any reference to 'Stray Dogs' or 'Bungo'.
Edit:
Finished the second season. Overall a bit better than the first...but it was a mixed bag.
The first 4 episodes were one long flashback, telling a bit of backstory for one character. The backstory completely failed to answer any of the most pressing questions about him. Also the whole 4 episodes were told in incredibly melodramatic fashion, which was almost unbearably tedious.
After that we did get one interesting power mashup, followed by a clash where everyone just went super-saiyajin and traded blows until the good guys won through the power of teamwork. Then everything wrapped up with a little bit of genuinely interesting exposition, explaining just a few of the many unanswered questions I have about this show.
Second season was a small step in the right direction.
Edit 2:
Third season had much better pacing. Completely abandoned many elements that held the earlier seasons back, and managed to hold my interest throughout.
Fourth season introduced a compelling new antagonist, and Fifth season dialed that antagonist up to 11, bringing the arc to a fairly impressive conclusion. Now I'm definitely glad that I stuck with this one.