Is one of the problems that at present, the technology simply isn't mature enough to do more than fulfil fairly niche roles. Looking beyond how Reaper does business is difficult - because at present, a UCAV can't do much more than that?
Would an honest .ppt be simply too unpalateable? Too restricted?
Clouds and vague lightning bolts are more punchy and can-do, and perhaps they do allow for the growth in capability and for the solutions to today's problems? Vagueness covers imminent capabilitygrowth, perhaps?
If an uninhabited vehicle could do everything that a GR4 (say) could do, with no caveats about operator situational awareness, bandwidth, etc., then perhaps it would be easier to write conventional requirements, and for the .ppt presentations to be less amorphous and nebulous?
Just asking....