It doesn't look like you can create automations based on the title of the incident. That would be a great help.
You can use the "Keyword" automation option, but that will trigger in title or description.
I noticed that, but our customer wanted to create a rule based on the subject of an incoming email, and I couldn't see a way of doing that directly. The keyword option is also not very clear in indicating that it would target the title as well.
I opened a question about this same thing a few months ago. I don't think keyword works because all the testing I have tried, it has not worked. But my testing is based on "email to ticket" when the Object Creation looks for the keyword. I also tried it in the body of the email but that also fails.
