Time entry should assume : when start/stop time entered, auto fill task when only one task on project.
When entering time it would be helpful if the system could auto add the colon when using start and stop time format. Let me enter 0900 instead of 9:00. Stupid yes, but it would save time. Also, if the system could automatically select the task when there is only one task listed on a project that would be a big help as well. Both would eliminate unnecessary typing and clicks.