Another configuration option I would like is for the screen to never go 'blank'. I.e. even in short pauses, it should keep the last shown word/chunk there, instead of taking it away... Hope this makes sense.
I like the configuration options, although I have to say the sliders on "adjust word length/speed ratio" could use some further explanation, and the interface could also be more descriptive maybe. (currently there are two "Word Length: >= 14" sliders for example).
And thanks for your work, this is one of the better free RSVP readers.