Pi-hole is an adblocking, privacy preserving DNS server.
Most geek users have a pi hole running in their home system. It usually is one of the first things many people install. Contrary to the name it is not limited to the raspberry pi but perfectly suitable for virtualisation and does not consume much resources.
As local DNS system it has a lot of overlap and synergies with the heimdall and swag images. especially the ability to generate and forward local domains and hostname resolution combined with DHCP could prove invaluable.
I think it is the missing peace and integration point between these and thus it would make a lot of sense spinning up an pi-hole image.