Would be so helpful to be able to add a comment to an individual cell, not just to rows, like you can in Excel. Comments on rows get so messy and lumped together.
Also need to be able to change the name/title of the comment or set it to reflect a different column other than the system column. Often for us, the project name is not the system column, and this is how you would search through comments. Instead the comments are named the crazy long task name that is set as the system column (for formatting reasons).