Im happy to say I finally figured out the wan connectivity issue and I have pushed an update to the github repo with the custum openwrt firmware for the dynalink dl-wrx36. The main-NSS branch (default branch) uses unbound + odchpd for DNS/DHCP and the main-NSS-dnsmasq branch uses dnsmasq-full for DNS/DHCP.
Real life has thrown me a few curve balls this week which has/will put a limit on how much time I have to thoroughly test this update....and as such this update isnt as well-tested as Id like. To be honest I havent actually even flashed the dnsmasq version...But the unbound version is working seemingly as it should and has been working well since I flashed it ~5 hours ago. And I know some of you have been waiting a good while for this to drop, so....
In the dnsmasq variant, I removed the custom configs for dhcp and network and firewall that I use in the unbound variant and let openwrt automatically generate default configurations for these (which it should do correctly for dnsmasq). As such you'll probably need to do some configuration to get this setup running optimally, but it should be working and functional. If not let me know and Ill flash mine temporarily with it and try and get it straightened out (just trying to avoid needless wear on the flash, since my routers flash gets overwritten a good deal more than most).
Let me know any feedback and if there are any problems. If anyone has a good dnsmasq configuration that would be good for "general usage" (better than the auto-generated one at least) feel free to post it and I can include it as the default dnsmasq config in future buillds.