I'm looking to solve a workflow issue; editing a selected layer's text without having to go back to the mouse each time. You can change the selected layer via keyboard shortcuts, so if you could also enter editing mode through the keyboard you could quickly shift through items to edit them.
Is there a keyboard shortcut (or alternative method) that can be used to quickly enter text editing mode of a selected text layer?
Double-click the thumbnail icon for the text layer. This will highlight the text for editing.
I think that's about as close to a shortcut as you'll get.