Great suggestions. Many which we know about or are current limitations of the RK platform.
Regarding the Alertness Checker. We could only go as low as 3 minutes because that is what is validated in the scientific literature. It actually is measuring your attention, which is correlated to sleepiness. The original test was 10 minutes long. It's also not supposed to be interesting or stimulating because we don't want it alerting you, therefore getting an objective measure of your impairment from sleepiness.
Thanks for the great detailed feedback. Very much appreciated.