They enjoyed text based adventures a great deal, and they loved SS13’s approach to player feedback. The main reason for a vast amount of text is because it can be developed instantly – freeing up the design team to try anything. Later the development team can begin to replace some of the text with visual/audial cues.
It also solves the problem of those who are hearing impaired. Dean received a large amount of email from those who are colorblind or hearing impaired who loved the mod but struggled with it. The current system has the side-effect of helping those peoples (source).
That’s why they want to do an entire hearing impared option mode, where you click the button and the sound is disabled, and replaced with UI indicators. Unfortunately it is not something they can do straight away, as they need to develop the other mechanics first. But it’s a personal priority of Dean (source).