The original Animaniacs crew were not nobodies, the original crew was trained by Hayao Miyazaki and some of them even worked with Miyazaki before he founded Ghibli.
The scripts were not lazy.
They were not interchangeable as the reboot proved.
The Artists were all Miyazaki trained, they also did MOTRHER FUCKING AKIRA and even Miyazaki's own Castle in the Sky before they did Animaniacs.
Toshihiko Masuda who was Miyazaki's replacement once he left Telecom is remembered, he is one of Japan's greatest treasures.
Only the Freelance episodes had bad animation, Telecom was excellent.