Domain is associated with control and ownership and that is delegated from a higher authority which typically has a higher controller/owner/authority and is why its a hierarchical system. And so if we use Domains for SAFE then for anyone who knows about domains will consider SAFE a system where there are higher authorities in a hierarchical system. And so get the idea that google & facebook owns most of SAFE just like people now consider google and facebook own most of the internet
Changing what meaning. Domains is just inaccurate and does not describe what SAFE is or is doing. So we are not changing away from domain names since it NEVER meant domains in the first place.
In SAFE we do not have any authority giving a person control over any domain, but rather the person choosing their own name they want and if it has not been taken then they can record their name. No authority, just availability.
I get the idea to use a familiar term for what is being implemented but its silly to try and use a control system name for a user determined system that does not fit any description for this control hierarchical system that was invented for control ove
EDIT: just to add - we need to consider long term and not the initial system used by geeks who love confusing terms ordinary people do not understand. Keep it simple for long term survival.