It would be awesome to force the calendar to continue to show Planned Dates/Duration and not Actual or Projected Dates/Duration even after actual dates/hours are entered.
Having a calendar with the ability to show planned in one color with the actual or projected in another color would be awesome to show our executives and stakeholders.
Calendars are the best visual representation we can show them. Yes, I do realize there are gantt charts in the system that could show this -- but calendars really give laypeople the best understanding in my experience.
Right now, the calendar options are very limited: