Germany's reps propose:

The current rule of 1hour minimum flying time to validate a task
falls short. This way the meet director will always check the time and may be
compromised when deciding to stop a task, if the stop time falls around the 1h
limit. This decision should be grounded solely on safety.

Also tasks which are not stopped but had a maximum flying time of less than 1h
are valid with the current rule. With the current rule the same flying
performance is regarded very differently. We propose to introduce a general
validation distance for ALL tasks. If it has not been reached the task is
invalid.

We believe that the average distance of all pilots as calculated by the scoring
software should be a fixed percentage of the nominal distance (20%). This
percentage may be selectable in the settings of the scoring formula or be
predefined by the CIVL working group. With our proposal we can reduce the
pressure weighing on the meet director when deciding about stopping a task,
since the final value of the task will be unknown at this point. This will
contribute positively to the safety of these problematic tasks.

http://www.fai.org/page/civl-meetings