Do Prosecutors Consider Prison Overcrowding When Making Their Plea Bargain Offers?

I'm working on a new paper entitled "An Informational Approach to the Mass Imprisonment Problem" (though suggestions for a better title certainly would be welcome).  The core idea is that the problem of mass imprisonment in the United States could be reduced at the margins if prosecutors were more aware of the sheer number of people incarcerated and the conditions of confinement in local prisons and jails.  In other words, if prosecutors were regularly advised of incarceration statistics -- the number of people incarcerated, the increase since last year, whether prisons are operating over capacity, and the number of facilities under court orders or consent decrees -- they might give marginally lower plea bargain offers.  For instance, a prosecutor with more information about the overcrowding of local prisons and jails might offer 22 months for a drug possession charge instead of the jurisdiction's going rate of 24 months.

From what I've read and from the small number of prosecutors I've discussed this with informally, I get the sense that most prosecutors don't consider prison overcrowding in making their plea bargain offers.   (So far, my attempts to survey local prosecutors' offices have failed.)   Am I right about this?  Do prosecutors give any consideration to the mass imprisonment problem when making plea bargain offers in run-of-the-mill cases?  And would it make any difference if they did have this information?