Number of low level discovered items

Hi,

If I want to monitore LLD, I have only one or two solutions actually :
I can obtain the state of the LLD (supported or not) and the number of objects on my host but not specify for one LLD.
I cannot have an alert if a new object has been discovered or disappeared, only the number object on my host...
It would be great an key like "vfs.fs.discovery.count" on the agent for example (return the number of objects in json array) or maybe more like "vfs.fs.discovery.log" with an event like

"Discovered object : {"{#FSNAME}":"/new","{#FSTYPE}":"rootfs"}"

or

"Disappeared object : {"{#FSNAME}":"/old","{#FSTYPE}":"rootfs"}" 

So, I can detect new filesystem, new up interface on my switch (with a filter).