As a long-time ‘screen’ user, the Ctrl-A issue is almost completely a non-issue. One can easily send a Ctrl-A to the underlying shell using Ctrl-A A. I assume ‘

As a long-time ‘screen’ user, the Ctrl-A issue is almost completely a non-issue. One can easily send a Ctrl-A to the underlying shell using Ctrl-A A. I assume ‘tmux’ has something similar. It’s also pretty rare to need the “beginning of the line” movement in a shell, when compared to the number of times one needs to control the multiplexor. Ctrl-A is also very close at hand, and the vast majority of people are using PC keyboards which also have a Home key that work just as well for movement.