I agree. I've long thought that animation could potentially make it much clearer what's going on in Vim.
Like if the user types 'das' to delete the current sentence, and it quickly highlights the text to be deleted, and then shows it shrinking away, as the text that was following it moves in to take its place. (Obviously, you'd want the animation to happen pretty quickly).
Such animation could make it clearer what the command is doing, and this could also make it easier to tell if you'd accidentally typed a command that didn't do quite what you wanted.
Like if the user types 'das' to delete the current sentence, and it quickly highlights the text to be deleted, and then shows it shrinking away, as the text that was following it moves in to take its place. (Obviously, you'd want the animation to happen pretty quickly).
Such animation could make it clearer what the command is doing, and this could also make it easier to tell if you'd accidentally typed a command that didn't do quite what you wanted.