@David_Louis_Puttick: You may want to use Tab + Q which works in any view. It defaults to the current user and thus ends up in “My Tasks”. And if you already selected a task in a list you can always just hit Enter to create a new line / task.
…so the task comes up and I fill in the details. What is the keyboard shortcut for entering that task? The enter key doesn’t seem to do anything on a Mac
I use Tab + Q very frequently. All the other known shortscuts work in that dialog as well. So you can super easy create tasks. Here’s what I use inside of the popup: Tab + A, Tab + P, Tab + D, Tab + F. To eventually create the task I use CTRL + Enter.
@David_Louis_Puttick, An alternative to Tab-Q, which works in My Tasks or any Project as well, is just hitting the Enter key when the keyboard focus is on a task; that will create a new task below the current one. Or Shift-Enter; that creates a new task above the current one.