Hi @nav46,
Systems Manager is very much an Enterprise Mobility Management solution. While I like it for our workstations and mobile devices, it's simply not designed to be an IT asset management platform. I use the Notes section on the devices to drop in license keys in use and pertinent information, which helps. The ease of use and great search ability meets most of our needs now.
I've used FreshService in the past and use Spiceworks currently for some additional management/insight/reporting/help desk. You might look there or search for some other IT asset management solutions if that's more along the lines of what you're looking for.
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