Host module was pulled due to non-workiness in a development version IIRC, of which form of non-workiness, I don't particularly remember.
I think a lot of it had to do with not understanding the topology of the host file and being rather line oriented, such as if you remove something that is a record or an alias, what does it do with the other aliases or records.
I'd *possibly* be open to including a working one, though I do generally feel /etc/host files are better managed with templates most of the time.
It might take some doing.