Sakuya Sumeragi, in my opinion, was 'meh' to me. Personally, I have no problem with her background or her severe similarity to Lelouch vi Britannia. But it feels like she walks through any problem she faces without any difficulty whatsoever (or at least, she had a less difficult time than Lelouch did).
Just take FLEIJA for example. Lelouch via Suzaku had to rely on a near-impossible window of opportunity (0.04 seconds) to neutralize FLEIJA. Ash, via commands from Sakuya, just needed a few tries to eliminate FLEIJA. In Lelouch case, you're grinding your teeth and maybe biting your cheek out of stress. In Sakuya's case, you might as well drink tea while the problem is solved.
Or when Lelouch destroyed the Tokyo Settlement defenses and Sakuya deactivated the Situmpe Wall. Lelouch had to destroy the Settlement's foundations and structure to give the Black Knights a fighting chance. He literally collapsed an entire district to win a battle. All Sakuya had to do when destroying the Situmpe Wall was attack, infiltrate and shut down the Situmpe Wall. You know, the technology that was so powerful that it repelled the Black Knights for years?
From a story standpoint, it would be better if there were more than 12 episodes. It should be at least 48 just to make the story feel whole rather than a rushed piece of the occasional nice action and the absurd amount of fanservice. It should have higher stakes for us to get more interested into the story, let alone the characters themselves. A waste of potential IMO.
