what I said about AS not being made for such a production, not because it is not a capable animation software but mostly because it is not organized for it.
Have you ever worked in a classical animation studio, with pen and paper and xeroxed cels and real paint and a rostrum camera? There was no software to organize things, and still we were able to crank out series as well as feature length animation. Instead we had a studio production manager, and a really good one. Whatever I learned about organizing workflows I learned from him, especially that no software ever could possibly replace him.
There is software which helps you in organizing things, but no software will help you if you aren't organized yourself. Even the most powerful project management tool is useless if the input isn't there, or faulty. Even the best asset management tool or database doesn't help you to find things if you don't have the discipline to save stuff under the correct name in the correct place yourself.
I used AS for series and found it good enough, however, it wasn't the only tool in my or the studio's workflow. If you use AS professionally, you will still need some Photoshop, some sound editor, some video editor, maybe even a compositing tool. Does that make AS worthless? I don't think so. I think it's the best return of investment I ever had with a software.
Unlike some bigger players in the field AS doesn't even claim to organize a whole studio workflow, so I don't see any sense in accusing it for not doing what it wasn't designed to do.