One option that comes to mind is to just chart the amount of visits in that particular system profile. You could create a custom vist count chart with a threshold of whatever your license count or limit would be. This would allow you to have a per system profile view. Hope this helps.
This would not deliver a correct result in regards to licensing. Longer Vists cost multiple licenses, you would have to add that, and you have to factor in the bounce rate and substract those visits.
No I don't know of a integrated way to chart Visit license consumption by System profile.
There should be an internal measure as you can make reservations per system profile, but I don't think its availible for charting.