Absolutely, it should benefit everyone with actively feeding the issues upstream and maintaining the official package. Once the next build of packages happens the 107 release through opkg will make it a lot simpler to install and will ship a working binary. I don't know if the compile options through OpenWrt will help reduce the overall size. The binary taken directly from GitHub (in my case armv7) is now around 32 MB, before is was about 20 MB. That's potentially a consideration to note for routers will less flash space and why the Wiki and guides are good for this potential edge cases.
Configuration recommendations like not chaining AGH as an upstream from dnsmasq is a good thing as well. I was doing this until I saw the comments on your guide and tested the latency and dropped it by over 10ms. Likewise more exotic features like ipset, which is a common setup with dnsmasq these days can also be ported to AGH, so having those on the Wiki will really help users get the best configuration from the beginning. The ipset syntax isn't actually that clear on the official guides, so again helping user transition is where the wiki can come into play.
As you've put in a lot work I won't do anything, but happy to assist with maintaining the wiki is you'd like.