PureOS should include Mozilla addon no-resource-uri-leak and install it by default, to limit leaking fingerprints.
Debian tracks creation of package no-resource-uri-leak at bug#869654.
When done, that package should be included in the default set in calamares and debian-installer.
Looks like this xul-ext is not in the debian repo, we might add it as deb and add as purebrowser dependency.
Btw Zlatan, can we also open a RFP in debian.