It would be very convenient to have the ability to have subfolders. I use folders for classifying projects. For example, Projects would be a Folder name. 2019 Projects would be a Subfolder name.
Undo actions at any time with Ctrl + Z
It seems that the opportunity to undo the previous action is only available briefly, while the "undo" pop-up is visible. It would be helpful to be able to undo previous actions using some on-screen button. Users may also be accustomed to using Ctrl + Z to undo previous actions.
Set Vacation Days/Leave
Allow team members to set leave or vacation dates, and prevent others to assign tasks on those dates? (Submitted via Intercom)
Formula Column Calculations
It would be very nice for the Formula columns to be able to calculate at the bottom like other columns do.
Manage all your tags from a single menu. > It would be helpful if there was a list somewhere (on the side bar perhaps?) of all tags and perhaps a count, it would be based on whatever you have selected (i.e. if you are in a project, it should list the tags which are in that project, same for space, and so on). > Merge tags
Different statuses for tasks and subtasks
exp: I want custom statuses for tasks and, at the same time, simple statuses for subtasks
Custom Field Manager
Manage all your custom fields in a single menu. Allow .csv file uploads when creating custom fields. Easily alphabetize custom fields in one click.
Automatic start date/due date based on start date, due date, or duration
A lot of my tasks I know the start date and how long they will take (for example construction/shipping items). Right now I have to set a start date and then calculate the date the task will finish, instead of saying start on x day and go for 45 days.