Well, for me, yes, I have some triggers that fire on dogs just before the off, so 2 mins monitoring would be more than sufficient, but for horses I am trading (badly) and several hours would be good.
On financial markets (hourly FTSE) ten minutes would be good.
So, yes, if the monitoring times were assigned to the events on loading like the refresh times are (or you could control monitoring from within a trigger that ran all day) that would be good for me. (Makes me seem really demanding!)
Ian