I have used ncurses to build a simple backend interface, that I use for testing new features etc. The end result looks nice, and is functional, but ncurses the library is a pain. It feels like something that would not be written by a programmer today: C, manual pointer-management, the interface feels too low-level. I ended up writing a C++ wrapper around it, adding thread-safety, better scrolling and some convenience functions (the ncurses form library I believe was a particular pain).
What I would like is a high-quality redesign of ncurses with a modern C++ interface.