Adult Swim should be focused on more adult western based animations rather then promoting eastern styles. Hence why they do more mature spins on kids’ shows. The original Adult Swim was to give life to old Hannah Barbara cartoons of the 70s and 80s to give something for 'Adults' to enjoy, watching shows of their childhood superheros like Birdman and Space Ghost in more mature grown up situations.
Look at Harvey Birdman, originally he was just some 2 bit superhero in the 60s now he's a struggling attorney at law.
Then you got Space Ghost another Space Vigilante hosting his own late night talk show with his arch nemisis.
Venture Bros a great contemporary version of Johnny Quest
Sealab 2021, which was originally a show that promoted multi-culturalism which is now redubbed in a over the top hilarious fashion, Then you have the New Breed
Robot Chicken a claymation show that mocks Pop Culture mercilessly...
The Boondocks.... Black People saying the N-word A LOT! (With of course great social commentary)
Brak is a quirky and of tempo look at Suburban Life
Adult Swim does not need any Anime at all, its a good thing its no longer on it.