While I think your company needs a management tool with them being world wide as well as maintaining that many devices, I do find this exercise to be very helpful for new employees and for people straight out of college. By logging into each device you are able to see what it is, how its configured as well as gathering the required information. Once you collect the information you can then use it to import into one of the various monitoring tools for constant monitoring as well as reporting (solarwinds, opmantek, spiceworks, etc). While you are in there I would validate and record the SNMP version, snmp string, or snmp credentials. Whatever system that automates this will also need access to the device so you will want to make sure the device has the necessary holes up in the future to that monitoring/database server.
