The best option I would like to suggest is to use a csv file for your titles and use it as a datasource. This way you can even ask the client to create it for you to avoid typos.

I agree, you can create a CSV and use it as a datasource (which is exactly what the title editor is doing anyway...). I can EXPORT that data, reorder it, and re-import it back into the title. Fine. I know that works. (My client (a funeral chapel) adds titles directly into the title editor based on the funeral they are presenting that day, rather than having to deal with csv files or external datasources.)

For simple titles, accessing external data sources seems to be adding unnecessary complexity to (what should be) a simple matter of just re-ordering the titles. There SHOULD be a method to simply move a title up or down within the title editor in Vmix. This is simply a QOL request.