Hi,
Firstly You are so awesome 
I have a feature request. Will be awesome if You can add VPN sessions for FortiClient (I can provide Mib files if needed).
For example in my situation this give me everything I need 1.3.6.1.4.1.12356.101.12.2.
.1.3.6.1.4.1.12356.101.12.2.4.1.3.1 <- this one give me the first active user
.1.3.6.1.4.1.12356.101.12.2.4.1.4.1 <- address from connecting is
and how about enable->disable polices ? You plan to add this too ?
How I can help you with this ?