I dunno, this list strikes me a little as "my favourite anime girls from the 90s" rather than anything else. If "kick ass" means formidable or competent, I could name quite a few others even within the same genre or show. For example Sailor Moon, Usagi's entire shtick is that she is the audience surrogate, the everygirl with a big heart. Her competency at anything is practically zero but she is the one who holds the team together. Mars has spiritual powers, Venus is supposed to be their field captain (something neutered in the anime), Mercury is the brains and Jupiter is the brawn. Usagi is pretty much the mutual friend that makes them a team. Important? Yes, certainly. Kickass? That is a whole other matter. If you wanted a magical girl in the list, why not Nanoha Takamichi (Magical Girl Lyrical Nanoha)? Her grown up version is the kind of person who decides that if the enemy is at the other end of a massive battleship, then I simply have to shoot through the battleship.
At lot of very badass ladies did not appear, notably anyone from Attack on Titan, Kill la Kill or Black Lagoon. Notable because these shows have female characters that serve as main combatants of their respective organizations/teams. No one from the old Big Three (One Piece, Bleach and Naruto) appear although they have large numbers of female characters. Also lacking are heroines who largely get by through their wits. Chiko from Daughter of Twenty Face or Maou from Maoyuu X Yuusha are excellent examples of female characters who are kickass because of their brains. Youko from the Twelve Kingdoms is another good example of a female character who grows into asskicking during the run of her show. Overall its a somewhat nostalgic list but from the commentary, I can imagine that a lot of people have their own candidates who failed to appear. Heck even if you restrict it to the era of Ghost in the Shell to Cowboy Bebop, there are still characters like the Knight Sabers (Bubblegum Crisis) or Rally Vincent (Gunsmith Cats) who could qualify.
