if you could erase all the sequels, which one would you pick to keep?

bold of you to assume i wouldn't just create my sequels

Mainly erase the last three sequels i would keep the movie and the 4 other sequels that were made by crest animation. Splash Entertainment made the last three horrible.

I would erase the entire franchise and keep only the original, as well keep the characters of Princess and Daria... everything else can go

short answer, the sequel i would make would serve as a soft reboot to the series, that erases everything except the first one.