In many other project management systems e.g. Microsoft Project, task completion is handled efficiently with a simple checkbox. When a task is marked as complete, it's immediately set to 100% complete. You can also choose 25%, 50%, or 75% completion directly from the ribbon, or manually adjust the percentage as needed. This process is seamless and responsive.
In contrast, Smartsheet's current approach feels more restrictive and complicated. To drive completion in the Gantt chart, I have to create a separate % complete column, requiring users to manually set the percentage to 100%. This setup is cumbersome compared to simply ticking a box to mark completion. While I could use a dropdown menu for "Not Started," "In Progress," and "Complete," and use a column formula to drive the %age from there, this sacrifices the granularity of completion tracking. On longer tasks I might want to set a very specific completion %age and column formulas prevent this.
Alternatively, adding a checkbox that sets the % complete to 100% involves automations, but these often run with noticeable delays, frustrating users.
I suggest introducing a designated "Complete" column where ticking a box automatically sets the task to 100% complete, and conversely, marking a task 100% complete ticks the box. An additional interface should also be included to allow for granular adjustments. This would greatly improve usability and make Smartsheet more intuitive for task management. This could look something like the attached image.