It would be useful if the graph showed the range of predicted manageable glucose levels. Ie, if my glucose is roughly flat, my basal is .5 but Loop can manage my temp basal up to +2U, that creates a range of possible outcomes where Loop can manage my basal from 0-2. If Loop shows that to me on the graph, it gives me the ability to predict the outcome if I do a larger bolus. Ie, I can bolus slightly on the high side and let Loop withhold basal, or slightly on the low side and let Loop add more basal.
If we take this a step further and show these predictions on the bolus screen, then it's easier for me to super-bolus to drive my post-prandial high glucose back down to the target range while feeling comfortable that Loop can withhold basal at the right time to keep me from going low.
Creating this issue as a place to start tracking this change so that we can collaborate on the idea. I'll work on coding it up.