why not show us how long they have till they are booted.
I like this idea too. Sometimes people have the gall to invite me to 1-day boot team games, and I'm used to taking a day or two per move on average. . . . it annoys the heck out of people when I forget which games are 1-day boot.
I'm not sure I would use a push notification system to remind me about boot times, though. It would probably help, but my phone would explode after a few days.