Which generals should be removed?
Anything with any anime or manga is automatically in. Seiyuu, buyfag, drawfag, and panda are tightly related to originating content. Meme threads will happen no matter what is done. DJT is the only one I'd consider.
Where should they be moved to? And which specific generals not mentioned should be moved?
DJT feels like a better fit for /jp/.
Add a manga board?
No. Manga and anime are close enough, especially with adaptations in both directions, that there needs to be a certain proximity.
Merge /jp/ back into Cred Forums?
Merge /co/ with Cred Forums?
What captcha should be used?
Character captcha is pantsu-on-headu retarded, as characters will be 1) so niche that growing newfags won't get it or 2) obvious enough that it's pointless. Kana captcha would be worth a try if and only if romanji is an acceptable entry, as not everyone wants to learn/use another keyboard.
What do we do with the sage function?
Nothing. Visible sage encourages sagebombing; manual age means faster culling for all threads; removing sage removes an option that's harmless in function.
Which of the following should be allowed on Cred Forums?
Anything with a non-interactive serial visual work is automatically in: LNs with an anime and/or manga adaptation, 'hwa, and 'hua. LNs without an adaptation are trickier, but I'd say yes simply because LNs as a whole are connected enough that discussing one with a past adaptation means acknowledging one without.
Ban Naruto again?
No. Line it or not, banning any series is a values decision, and opens the door to requests for banning other things due to unpopularity.
Which of the following should be banned as well?
Which of the following should be banned from the board?