Hey there concord! I am a relative newbie, so I do not have a lot of experience.
However, I have been slowly closing cards that are either, not of any use to me, or are low limit cards that I will not use.
My Fico went up 14 points this month, nothing aged over a year, util stayed the same, no inqs fell off. The only change I can see is the four cards I have closed. Before closing the cards though I do a util picture mentally. If I can close the cards and still keep util low I do it! I PIF every month but I let stuff report.....
You have so many credit options from what I have read, that sometimes we can see the things we truly do not need and get rid of them without a negative impact.
This is just MHO, but if it is not serving a purpose for you I say CLOSE that sucker!