As far as I know, ESRI has not released a best practices document on file naming, other than length, no special characters, no spaces, etc.. Until this exists -- and it may never -- it will be difficult to organize disparate data in one geodatabase. As a highly "visual" software, where many users rely less on text than on imagery, I would love to see the ability to color code file names, as is possible on a Mac. Instead of searching though 200 names looking for a file with an obscur name, you know to look for purple.
