This tag is not a good tag.
It's either the outfit, in which case it shouldn't imply a female tag because any gender can wear the outfit.
Or it's a gender specific species tag(i.e. vixen, mare, bitch etc.), which we aren't supposed to have.

On top of that, I can't even properly submit an alias suggestion because somehow it got bunnygirl and bunny_girl aliased to it, which apparently blocks it from being aliased to anything else.

Well, has any particular user been using it, or has a lot of people?

I looked at 5 images, 5 different taggers.
Some may have tagged bunny_girl, I dunno.

It's a fairly small tag, only 61 images tagged.

I won't say that the tag has to go completely, assuming it refers to the outfit, but it needs to specify that it's the outfit and it should lose the female implication.

We currently have bunnysuit, bunny_suit, bunny_outfit, bunny_costume, rabbitgirl, and bunny-girl all meaning the typical ears and tail bunny outfit.
This should be one tag, and it shouldn't imply female.

There's a few touhou characters that do need the rabbitgirl tag, but I thinking putting it with bunny_girl is perfectly fine.

Patch said:
There's a few touhou characters that do need the rabbitgirl tag, but I thinking putting it with bunny_girl is perfectly fine.

No, they need the rabbit, and female, and anthro tags.
There's no need for a separate tag for bunny, or rabbitgirls.

We really should find a better term for all these nomimi animalgirls and the fact they implicate female. I've run into multiple instances where these "girls" are intersex. Leading to both the general name being wrong, and leading to an erroneous gender tag.
Comming up with a gender-neutral tag to cover the entire spectrum would be much better than having gender specific ones. Plus bunnyintersex sounds stupid.