So I tried your private version as well as KCC 2.5 on a manga volume. KCC gave me 25.6 mb something file and AWKCC gave me a 26 mb file, not much of a difference (original was around 100mb). But there were some pages out of order in KCC output while AWKCC one was alright. Probably because I had to use extracted manga folder as input for AWKCC as it only allow selecting a folder while I used original rar file directly with KCC.
Anyway what is the difference between your version and KCC? Other than page order and file size I didn't feel any other difference (I wasn't very thorough)
PS: Is there anyway to enable landscape mode in comic? I have seen comics downloaded from amazon store that support landscape mode.