Many thanks for your suggestion and support for TrainingPeaks Virtual.

Currently warnings are already given wherever it is reasonable to do so (i.e. where there's a chance that someone could correct the issue - e.g. if their heart rate monitor may have slipped, then a warning is given before DQ, so they have the opportunity to readjust).

Instant DQ's are only given when there's either no reasonable way to correct the issue while riding (e.g. if the trainer is found to be miscalibrated, and giving an undue advantage), or if giving a warning would lead to undesirable behaviour from people "gaming the system" to cheat but stay just under some kind of permissible limit.