Option to choose whether or not to open previously viewed files.
I open a few files for editing and then close the app.Then I re-open the text editor to make a note of something, I can't start typing right away, I have to open a new tab and then start typing. Whereas in gedit, I'd just open the app and start typing. Also after some time, opened files start to pile up.
Possible solution would be add a toggle button in Preferences to choose whether or not to continue editing previously viewed files.