Are there any efforts to radically reimagine the entire "terminal" concept? Seems very limiting to advance further in the 21st century with those same 70's technical assumptions. [edit] I was thinking more in terms of being unconstrained by low-res displays, inability to display anything other than text, etc.
See the list here: https://github.com/hoeck/schirm
I think the most popular was TermKit (https://github.com/unconed/TermKit, https://news.ycombinator.com/item?id=30517205).
Maybe the most successful such attempts is DomTerm (https://domterm.org).