(main developer of Terminology here) As stated on https://phab.enlightenment.org/T746, it is not an easy move due to the way the text grid is designed.

I might work on it someday.

I love Terminology, and the entire 90s vibe of EFL and Enlightenment generally. So unashamedly not flat design in a world of Jony Ive / Google Material Design conformity.

unrelated: are you the billiob that used to contribute to aMSN back in the days?

Yes, I am!

It's honestly not the most important limitation of Terminology (except maybe to you). It doesn't support re-ordering or renaming tabs. It doesn't support searching into scrollback. It doesn't fetch terminfo data.

It's still the best terminal emulator out there. Incredibly fast in software-only, even better when hardware accelerated, skinnable and configurable.