Aus Enduro
I think the focus with Enduro racing in Aus really needs to be on a more "laid back" "FUN" event that anyone can do on whatever bike they currently have and encourages more people to come and give racing a go. It still needs to be fun for the less fit riders too and the people who do them on DH bikes!
We really should be trying to grow this discipline in Aus. More riders = more funds to hold bigger and better races with more (some) prize money, exposure, sponsorship ect.
Yes, I think you should have to ride to the top of each run, but it should be able to be done with your mates having a yarn and good times (not timed or affect your end result)
The endurance side of things can come from the length and/or doing more runs of the "fun" tracks that should incorporate a good mix of short pinch climbs and fun descents.
I also think there should be numerous "A-lines" to reward the more skilled riders as the climbs reward the riders with more fitness.
People who can jump doubles ect like to do so and closing them off for racing only benefits the less skilled and is less fun for those who like to do jumps.
There should be enough time after each race run to head back to your car, have food and drink, check your bike over and get ready for the next run.
I have seen event schedules where you have to be somewhere different pretty much every half hour through out the day which gets too confusing and is a turn off for myself and others I have spoken to.
I think the race format is best kept as simple as possible. Two tracks are enough, any more than two and practice, timing and organization starts becoming too complicated without wanting to time liaison stages as well.
Of course a lot of this depends on race location, number of race organizers and trail layout.