In Calendars object, it would be great to create a calendar that displays tasks based on a custom date field (rather than current restrictions requiring display by Full Duration or End Date).
Alternatively, in Reports object, perhaps enable a calendar view of filtered tasks/projects (rather than current restrictions requiring a table view).
Use Case:
Using a "Live Date" custom date field which identifies when something is published/active in market. This could be used internally with marketing teams, sales teams, and leadership so they can see what's active/in market now and in the future, while still allowing use of Start/End Dates for production purposes.