Drake Equation and SF

While the votes are still no where near being in, I am noodling with what I might do with a 'start from scratch' Traveller game. One idea that came to mind is how one could model various SF series based on where they weight the Drake Equation. (an additional factor might be added for those who have obtaoed FTL travel).

The Foundation Series, for example, effectively zeroes out the number of planets other than Earth develop intelligent life.

Pournelle's CoDominion, what I know if it, is very close to that, with only one other sentient species (the Moties) appearing.

Known Space, on the other hand, has moderately high numbers across the board, with several communcation-capable intelligent species, but several more habitable but non-sentient race worlds for those species to colonize. 

Stephen Baxter's Xeelee stories keep the "viable planets that will develop life" at 100%, but greatly expands the definition of 'viable' so there are living ice creatures in the ice on pluto and elsewhere across the Sol system.
 
Jack McDevit's Priscilla Hutchens novels, while they have a low number of habitable worlds per star, focus on the low length of time any civilization survives to send messages into space, so our heroes find several artifact rich dead worlds or peoples collapsed back to a pre-gasoline tech level.

This is just me playing with an idea, but has anyone ever seen this discussed in an RPG context.