My 2 cents is that GUI is good for exploring new software, while TUI is wonderful if you already have a mental map of what you're doing. So for everyday used software I would definitely hope that more TUI's where used.
I'm looking for something that you can embedd in your own application. LaTeX would be great but it's not really nice to have WEB code in your C application. It's also has a bit troublesome license.
Om working om a distributed erp system. The goal being native ui in android, iOS, Mac OS, web, windows, Linux and curses with crazy fast response times. No user operation takes longer than 100 ms.
This is both a clever hack and a brilliant solution. But it also worries me a bit. Mostly because I've seen a lot of Visual Basic + MS Access solutions. They work fine on a single computer, but they you put a database on a network share to be able to share it between a few computers and the performance is often horrendous. If you're doing a lot of data processing it's often best to do it as close to the data as possible.
But as always, it's seldom the tools, but the right tool used for the wrong usecase that is the problem.
The big thing missing here is a good way to do code reviews and CI/CD. This might not be important for a single user but if you're collaborating with someone it can.
For CI/CD you can get quite a long way with git hooks and for code review I would look into git appraise. that's the best one I've found but I would really like to hear if someone else has a better idea here!