I've read somewhere some years ago that if you can create a usable hybrid combination of MS Office Word document (WYSIWYG) and TeX then you have a killer application for document editor. Additionally, similar to Tioga with the fact that you can also use other programs inside TeXmacs (e.g. spreadsheet, Octave, etc) is a huge boon for productivity [2].

I think the naming of the TeXmacs does create confusion though since it creates the impression that this is combination of TeX and Emacs but it's neither of them. Just like the Holy Roman Empire after the collapsed of Roman Empire, it's neither Holy nor Roman nor an Empire.

Now hoping for the modern incarnation version of CEDAR desktop environment.

[1] https://www.youtube.com/watch?v=z_dt7NG38V4

[2] http://cajun.cs.nott.ac.uk/wiley/journals/epobetan/pdf/volum...