Actually proper DH sounds much better than this sort of halfway house, ill-defined not a race but an “Event” format, you want a race against the clock, primarily downhill but with less scary bits? So basically timed trail centre descents?
Well they’ve already done this: Mashup, Enduro DH, etc…
Personally I quite like the idea of “GPS racing”, define a set course on a map and riders can rock up at any time (alone or in groups) and have a run on it, tracking themselves on their Smart-Phone/GPS device, could be any type of course, you could have as many runs as you like run it over the course of say 3-6 months, login and upload your best runs…
The technology is largely there and pretty much free already (Endomondeo/Sportstracker), it could well suceed where Freelap seems to have failed: ie a cost effective way for riders to compete/benchmark themselves against others with minimal infrastructure, cost and bother…