Hey,
I have another feature request for EdgeOS for ER-X and equivalent. Currently the installed version of OpenVPN on the ER-X firmware 1.9 is OpenVPN 2.3.2, which lacks specific TLS 1.2 capability, as in, you cannot use TLS 1.2 at all. This opens up some vulnerabilities and weak points in the system with that limitation, and of course isn't as secure as it could be at the same time.
TLS 1.2 support, including TLS 1.2 ciphers, were added with OpenVPN 2.3.3 and up, with the current available release being 2.3.11.
Eric Renfro