I would love to see the "expand-hosts" function activated by default in the dnsmasq.conf. That enables me to use my bubba|two as a DNS server with my own host to IP mappings.
And also that the admin-web-gui leave the /etc/hosts file alone
Or even better, that the admin-web-gui has the possibility to add hosts to the file /etc/hosts.
You could look at Clarkconnects API for a shortcut on implemeting the feature in the admin-web-gui.