That's a great idea. It's one of the important missing features, and ideally would allow you, from one place, to check series that have been scheduled, delete series from the schedule that have been cancelled or you're no longer interested in, and perhaps even prioritize which shows get recorded in the event more shows are being selected for recording in any given time slot than you have available tuners.
The last item could unknowingly be an issue when shows are deliberately extended for an additional minute and run into the next hourly slot. So if you have a 2 tuner Tablo, and a show on CBS runs from 8:00 - 9:01 PM, and you've also selected shows on ABC and TheCW to record from 9:00 - 10:00 PM, there may be a conflict. I don't know how Tablo handles this conflict, whether one show in the later time slot starts a minute late or gets cancelled entirely. It would be nice if we could start and end shows a little early or a little late, as opposed to setting up to do a manual recording to fix the problem.