@Drbigt fantastic to find a fellow Monty Python fan!!!
My parents introduced me to this show when I was a teen and I have loved it ever since.
This sounds like a great idea. Unfortunately I won't be able to take this challenge on at present (don't have all the packs and not a huge amount of free time at the moment either), but I hope you do get some more people for it.
I have not created any characters based on the TV series before but did experiment with making sims based on the Spamalot musical. Here they are: https://www.ea.com/games/the-sims/the-sims-4/pc/gallery/E0EF2F107CB911EA8D5AABC23C933B11?category=households&searchtype=item_name&sortby=downloads&time=all&searchquery=Spamalot&max=50&maxis=false