Hey there!
I have been developing a front-end that directly talks to the vyos API on version 1.5. Currently I use the pyvyos project to interact with the API. It might not look like much at the moment but I am hoping with some help from the community we can take it further. Here are some screenshots of the current project. It might not look like much at the moment but, I am getting there slowly.
Project - GitHub - xTITUSMAXIMUSX/vyerwall-gui