UPDATE: PLEASE IGNORE "IDEA" :) I just noticed that hovering the top edge provides slide navigation/jump tools. Great!
Allow better slide navigation by providing a text box to type and jump to a specific slide number (and showing current slide, e.g., "5 of 32"). Also, buttons to jump to first/last slides might be nice. Problem is, when you get near end of slide show and want to jump back to beginning or very early slide, you have to click "Previous" many times in a row (or reload the slidesix.com page to "reset" back to start -- silly workaround).