I think if that works for you then stick with it! Pangolin would mostly do the same thing. I think if you wanted more auth control like users and pin codes and OIDC and roles you might not get that with NPM out of the box but could add on.

Pangolin has a tunnel component to it so if you were challenged on the ISP front you can put this on the VPS and it just makes configuring the connection back to the network easier so you don't need to set up WG back etc... It wraps it all up nicely in a UI and simple install script. It can also all be automated with the API if you are into that kind of thing.