The AutoText dialog doesn't have great usability (see bug 52607).
A small improvement would be if the dialog pre-filled tha name and shortcut based on the selected text.
Name could be the first X words from the first line, no longer than 20-25 characters, and shortcut could be what it'd automatically add if the user entered that name themselves.
Also, upon the first click into Name or shortcut fields, pre-select field content, then entering a custom name is zero extra steps.
I'm not sure how useful it'd be in the end, but I think it's a nice touch having something there by default, without adding any overhead for the user.
Reasonable, but maybe word bounds rather than fixed 20-25 chars.
Yep, that's what I meant by "first X words from the first line, no longer than 20-25 characters".