For me it would be useful if it would work both ways, being able to see external calendar events in the forecast like it is in omnifocus and be able to see due to date tasks in Calander app.
There is an OmniFocus competitor which does provide this feature, in fact with bidirectional editing (i.e. the ability to drag and drop tasks in the calendar, whereby the changes are synced with the task manager). I find their product unimpressive otherwise but this feature is indispensable in my use case, and I suspect that of many others. Could the OF folks chime in? Any hope in a forthcoming update?