Our Solarwinds NPM interface licenses are about to meet the subscribed 2000 interface license limit.
The current occupied interface licenses include the virtual infrastructure VM interfaces as well.

Now I would like to know that If we go for VMAN tool instead of upgrading the NPM, for managing/monitoring of virtual infrastructure separately and not through NPM.
would it be wise and what kind of additional information I can get through VMAN which was not possible through NPM?

Looking forward a sincere advise.