Could you add an @weeknights tag?

An @weeknights tag would allow us to get an evening reminder before a normal working day, but would save us from being reminded on a Friday night, for example. I suggest that you add this tag to do exactly as @weekdays does, but from Sunday through to Thursday, rather than from Monday through to Friday. Or go why not whole hog and let us add special tags with our own time, reminder and other settings?