More people = more animation = more buget expences = longer production times, etc.
I love that this fictional version of Paris is so clean, the best friend character is creole, the bread is properly represented (as opposed to a baguette sword fight), the pyramid is there, and there was a low key racist villian in Marinette's own grandfather - what was based on Obelix. I think they even mentioned Charles DeGaulle airport once.
It's a great representation of French culture, even if it is very surface level. I wish they'd dig deeper into other things like Lucky Luke, hip-hop, wine, voting, motorcycles, atheist/women freemasons, and July 14th.