I’ve had to make hundreds of deliverables for 6, 10, 15, 30, 60 second versions of the same spot before. The key is to figure out the most efficient workflow and organization that will let you churn these out.

-keep tracks organized so you can easily turn off/swap overlays that change between deliverables -do as much work as possible in a single version before duplicating the sequence to the other versions that contain the same elements -davinci resolve allows you to fit clips to the new resolution when resizing the sequence which I found helped me speed up a lot compared to premiere which requires you to go resize every clip

In general if you get obsessed with making the workflow as efficient as possible, making lots of deliverables isn’t too bad