The tag human-biology seems a bit redundant to me, as everthing on this site is about biology.
I propose to rename it to just humans, to bring it in line with all the other tags on the site. Please post your counter-arguments here if you disagree.
I like your proposal, and I would go one step further. Currently there are 5 tags for humans:
I propose that we merge genetics/genome to "human-genetics"; anatomy, ear and biology to "human-physiology" to make the tag more descriptive.