I like this pool, and I want the spirit of it to live on too.
I think you may start to have issues around the point of "practical armor" right at the boundary, because full plate scaled and fitted to a woman is clearly practical, chainmail bikini armor is clearly not, but there are some armors in between which might need a bit of refining in the definition.
boobplate
Take a look at this post post #11671140 (rating:s).
It wasn't designed only with practicality in mind, you could argue, because it follows the curve of her chest, and some of her thigh is unshielded (I think?), but if I had to choose between this or no armor for a woman in a battle I'd choose this. I think it would stop attacks, but it's not considered a valid entry in "Women in Practical Armor" because it's boobplate and it doesn't cover the entire body from the neck down.
Also, the argument for boobplate being impractical sometimes centres around the "cleavage" of it channeling swords to a weak point in the armor near the heart, but I think that's some armchair reasoning and actually you'd still be pretty happy wearing boobplate versus no armor. It'd protect you from most angles even if that channeling thing is true.
leather armor
Look at this post post #11431879 (rating:g).
Not sexualised armor, but also, in reality, not going to protect you from anything sharp really. There's a little chainmail on the shoulders, but the idea of leather protecting a person in a fight is a bit of a myth. Personally I think it should still be considered proper armor, because in the fictional context it is presented in it functions as proper armor, is meant to portray to the audience "this is armor", even if in real life it wouldn't work, but just one to think about.
I don't think this is insurmountable at all, just that it would be good to define whether practical armor means "no frills whatsoever and the same thing a man would wear historically" (like the pool is set up, essentially) or if it means "armor not designed to titilate or designed with no thought to protection at all".
To throw out some loose ideas for this tag, perhaps female_knight (though not all armor makes one a knight, and there are even scifi armors in Women in Practical Armor), armored_female (though it doesn't really make clear "how armored", but that could go in the wiki), or something in that vein.
I also like the idea of tagging impractical armor too, but I understand what you mean about needing to specify the armor is on the woman not just near the woman.