Neat tool, and glad it's here for others to see. It doesn't look like it matches the specific kind of ovpn setup I'm using (for example, I don't have a client key/cert).
When I last looked at the situation, I couldn't find an ONC equivalent for some of the options in the .ovpn file. It might be the docs or even functionality have gotten better. (I remember looking at some PDF, for example, and now there's https://chromium.googlesource.com/chromium/src/+/master/comp...) It's also possible I just missed something last time. Either way I should take another look.
which is a WebUI thingy I wrote to solve exactly that problem.
[disclaimer: "advertising" tool I wrote]