What's my problem the other 10% of the time?
The main early issue I had was how Lelouch somehow escaped from the Chinese embassy, had C.C. dress up in his costume (and replace him with no-one noticing) and managed to make it to his school within a matter of minutes...at the gym with V-woman beside him, ready to phone time stopper. Sunrise couldn't explain how Lelouch did it and that's why no explanation was offered.
Another issue I have is with the continuation of the S1 cliffhanger. At the end of S1 Suzuka was about to kill Lelouch, yet at the start of S2 Suzuka had had a change of heart and thought it best to transport the man he wanted to kill for revenge to another country in order to win the favour of Charlie. And, for some reason, Kallen betrayed Lelouch in-between this, thinking it was a good idea to abandon her leader during an important operation.
There were many other things that bugged me about S2, such as the return to a school setting for no reason other than pleasing 30 year olds who want to see school girls in minis and connecting with the younger portion of the fanbase. I had expected Code Geass to advance from filler school after S1, but...
Here are some other issues I had with just the first 8 episodes.
- The whole memory loss thing was done in order for S1 to be repeated as much as possible. The series would've been a short OVA or 13 episode series if not for Sunrise milking the show, and ruining it as a result.
-- The 'hide your geass with a contact lens from specsavers' thing ruined what C.C. had said to Lelouch at the end of S1 about being the only one left beside him. This was done just to get him back into school.
--- The sidestory about Shirley uncovering Zero's real identity was tossed aside when everyones memories got changed. It seemed to be building up to something towards the end of S1 and then it was just forgotten about in order for S2 to play out how it did.
---- In S2 war tactics no longer mattered because only super mechas could hurt other super mechas. This was highlighted when a nornal mecha hit one of the crappy new super mechas and wasn't able to scratch it.
---- The surprise submarine and midair upgrade of Kallen's mecha was retarded. Why was the submarine directly below Kallen at the perfect time, ready to save Kallen with a mecha transformation?
----- Why did Lelouch spend 10 minutes talking to Nunnally instead of just taking her, like someone with a brain would? I was waiting for Suzaku to appear at the end of the episode and he did.
------ Where as plot twists made sense in S1, they just happened without explanation in S2. In S1 Lelouch came up with a plan involving the enviroment after asking someone else for help and taking his time. In S2 he ordered the enviroment to be used to his advantage (underwater) when it was impossible for him to know about what he ordered his people to do in advance because he had had no time to prepare.
-------- The fan service. It's ok having a few bouncy boobs and panty shots, but having characters dress up in skimpy outfits during serious moments for no reason other than male satisfaction hurt the series.
...do you need me to go on? I actually could.