Concretely, Emacs/elisp isn't particularly great for handling the newer terminal protocols that allow things like Shift+Enter, Ctrl+Space, etc., along with high

Concretely, Emacs/elisp isn't particularly great for handling the newer terminal protocols that allow things like Shift+Enter, Ctrl+Space, etc., along with high colour support or better handling of the alt/meta/⌥ key. Hence why the flurry of new terminal emulators. The other problem is it does have to be hosted somewhere, and if you run it locally, it goes away when you close your laptop. If you run it remotely, you have the latency to the remote site. I suspect Superlogical is going to find a way to fix this problem.