My english is not perfect but I'll try to explain the inconsistency of this implication.

A Bodysuit is a lingerie:
http://en.wikipedia.org/wiki/Bodysuit

A Skinsuit is a sportive cloth and it is often used on e621 for superhero outfits:
http://en.wikipedia.org/wiki/Skinsuit

Then explain to me why the sexy lingerie she must find mixing with sports and superheroes?

problem solved, see below

These words are used differently in different places, and people will just use the tags as they understand them without checking for official or widespread definitions first.

yeah, this is the big mess, as usual x)

Nevertheless I do not see the logic of having implicated these two terms.
It would be better to revoke the implication and I take care to remove the skinsuit tag where they should not be.

A decision on the horizon?

Finally, I will replace the Bodysuit tag by Teddy...

Teddy?

I don't have an opinion in particular about aliasing either tags to each other, if they're being used for the same thing, but maybe someone else does

Yes Teddy. English is not my native language but it seems that the term is commonly used for this kind of underwear.
This term was already used slightly before I started my Tag lingerie project and responds perfectly to what is shown on e621

http://en.wikipedia.org/wiki/Teddy_%28garment%29
Teddy Lingerie results pics google

When I first decided to bodysuit, This is in French, we call it "Body" simply ^^'
But in the end I realized that bodysuit involves much more than this kind of lingerie. So I'll replace it quickly.