I've kept out of this, because I firmly believe the people who know about this are the current riders,(with some wisdom from their elders too) and their opinion is worth yards of my nonsense. However, from a spectator's point of view, I just want to see safe, fast racing, with STYLE...love style. 4 laps is great, but 5, 6 would be even better. More would be too much, and I would simply be anxious. (Of course we sidecar people are used to "short" races anyway)
I think anyone who can manage 1 lap at current racing speeds is a hero, and as for the likes of Stuart Sturrock or Mick Skene, on their very first try, doing what they did...good grief, the witch is speechless......