What if noone sinned?

The start of Leviticus is the rules for the priests how to do the different offerings. It is a bit complicated and would probably take some time to figure out how it all worked the first few times! God provides for the priests in that they get to eat from some of the offerings. Live in Leviticus 7:

9 Every grain offering baked in an oven or cooked in a pan or on a griddle belongs to the priest who offers it, 10 and every grain offering, whether mixed with oil or dry, belongs equally to all the sons of Aaron.

Which occurs, I think, because the priests don't have their own land, so can't have livestock or grow grain. So God provides for them out of the offerings. But what if noone sinned? The priests would grow very hungry and probably be very bored!
However, I'm guessing that the priests were very well fed and very busy!