Hi,
I did not say that easy-rsa needs to be merged into openvpn; the oversight is that there isn't a backport for easy-rsa, because the openvpn backport isn't fully usable without the easy-rsa backport. It's definitely an oversight, since trying to use openvpn 2.3 in wheezy is an unnecessary hassle now. I needed to figure out that I also need the easy-rsa package to use it, and that a backport for it doesn't exist. I then ran into errors trying to backport it myself and just ended up downloading the deb package and installing manually, all a big waste of time for a trivial task.