I mocked up a few interface ideas:
1) Colour code the session progress bar to show progress toward a completed batch
2) Integrate the progress bar (Gantt style) into the list of brew sessions

Please

 

I like this idea of incorporating a calendar, for planned events like dry hopping, or adjusting fermentation temperature for instance. Maybe similar to the brew day checklist, if you could have a post brew day check list specific to any particular recipe.
Cheers,
Craigerrr