The pre-emptive stuff can be learnt behaviour. Here's an example. WP8 would need an option in Settings for me to choose which days are "work days" and which are not, with different do not disturb settings for each.
The other pre-emptive behaviour would be more location awareness. Geofenced To Do reminders is an obvious one. But how about location aware Calendar appointment reminders - the phone known where you are, where you have to be, and uses a travel time estimation algorithm to warn you "you really should be setting off, pal".
So basically Google Now? It is aware of work days and weekends, as well as firing location-aware appointment reminders, plus other things like package tracking and flight reminders.