The format of 2013 Rally Acropolis was a very good example for a shorter event.

There was Shakedown on Friday morning - ceremonial start in the afternoon and two passes of a demanding stage in the evening.
Saturday and Sunday as we are used.

Itinerary: https://www.ewrc-results.com/timetab...is-rally-2013/

Remember it still as one of the best WRC events ever attended (about 50 WRC events) - lots of packed action in this 3 days. And to be honest mostly at a fourth day at a WRC event its getting too much.