Try your state BON for actual statistics.
For example, in Texas: http://www.bne.state.tx.us/files.htm...%20Information
Scroll down to 'statistical' information.
I would say that the stats of maturing instructors has the greatest impact. Our MSN instructors are far older, statistically, then the gen pop of nurses (no disrespect there, just fact). This will HUGELY impact our ability to train the next generation.
You might look at the ADN/BSN angle as an indication of management vs. bedside nursing. BSN have the capability to trend more away from the bedside.
The whole ADN/BSN debate (ADNs should be phased out by BSNs - there is a position paper on ANA's website abou this) has serious implications on recruitment/retention.
You might look at total # of nurses vs. those actually working in the field and how current unhealthy work environments have caused an exodus from practice (as supported by statistics.) Both ANA and Amer Assoc of Critical Care (aacn.org) have position papers on healthy work environments.
You could compare the maturing of the nursing workforce to the general maturing of the population and how this impacts care both today, and in the future, when MORE nurses will be needed.
Some states give statistical data on foreign born license holders; you could debate how that impacts current care (The current Senate bill on immigration would lift caps on foreign nurses coming stateside. It's not likely to be in a final bill, but there's a POLICY debate that can be backed w/ statistics.)
Just a few ideas. . .