Aid in the suite should only be an aid, not a bummer.
When I hire a freelance animator it’s because I do not have time to do the animation. It is understood when they walk in the room with their work, I will put it in and if it is not perfect, they will be re-rendering.
Revisions are not free… fixes to make it like version 1 should have been are and if it happens more than once a gig, it’d be hard to justify the expense.
People who want repeated gigs will make it easy for you.
