Tek emulation is very cool, and I wish it were possible to use it more... but the protocol doesn't allow you to clear parts of the screen, so the only way to undraw stuff is to clear the entire screen and redraw from scratch. This makes it really limited for interactive use.

(This limitation is there because the original display terminals used storage scopes with persistent phosphor --- there was no framebuffer, you just steered the electron beam around on the screen and lit areas stayed lit.)