It would be really handy to have split batch fermentation logging. For example, I often ferment a batch in two or three fermentors, as a way to test different variables ie. yeast, fermentation temp, different profiles and often different dry hops ratios. Normally with a Tilt in each vessel to log the progress. Brewers Friend does a great job of displaying the logged data and it would be great if the site accepted multiple data feeds.