Benit149 said:
I took a quick gander through both tags, and the number of characters lifting the skirt high enough to expose their chest is very few. (post #148418, post #83845, post #1109571) I agree that the degree of exposure is way easier to determine than the length of the skirt, but going by these guidelines, dress_in_mouth would be very underpopulated compared to skirt_in_mouth.
[...]
As I said above, dress_in_mouth would be underpopulated if kept separate, so a subset based on degree of exposure would be beneficial. After all, the action is the same.
I don't really have an issue with dress_in_mouth being very underpopulated, as lifting of the full dress to begin with was always very niche in comparison to simply lifting just the skirt portion. Combine that with the extra niche of lifting with the mouth and you're of course going to have a pool that is only a small niche within an already small niche.
Benit149 said:
There's also the possibility of the breasts already being outside while just the skirt is being lifted, such as post #57912 or post #1832217. Would those thus be tagged skirt_in_mouth breasts_outside instead?
Yes, images like that would be tagged something else. In particular post #1832217 would be both a lift and a dress_pull (pulls are pulling down from the top, where lifts are pulling up the bottom).
Benit149 said:
I wonder if there were new tags that could be made to make them less confusing to those unfamiliar with the tags though. As frustrating as it is, not everyone reads through the wikis or peruses the forums to do research on these topics, leading to wildly mistagged images. Ergo, skirt_in_mouth and dress_in_mouth would look the same to these folks.
What if there was something like skirt_in_mouth_exposing_waist and skirt_in_mouth_exposing_chest to tell the two apart? Yes, they're wordy, but they're just examples of how much clearer the tags can be worded. Then the dress_* equivalents can be aliased to them.
Well there are several approaches that could be taken probably, but instead of making new tags, it might make more sense to turn to how the issue stems from the skirt_lift and dress_lift tags. If we changed the definitions of skirt_lift and dress_lift to be based on exposure (probably also change the name of dress_lift to full_dress_lift or simply make a new tag for that and alias over dress_lift I guess to skirt_lift), then all we'd need here is a tag to indicate that the skirt of the outfit is being lifted by the wearer's mouth. Determining the degree of exposure is determined by the presence of skirt_lift and (full_)dress_lift tags on the image.
It's similar to what you're proposing, but by dealing with the issue between dress_lift and skirt_lift we successfully reduce the total number of tags here from 4 tags or equivalents (skirt_in_mouth/skirt_in_mouth_exposing_waist, dress_in_mouth/skirt_in_mouth_exposing_chest, dress_lift, skirt_lift) to 3 (skirt_in_mouth, dress_lift, skirt_lift).
Given that skirt_in_mouth really is a type of skirt_lift, naming-wise I think lift would be more appropriate to include in the tag name. Though the only idea I came up with for that was like mouth_skirt_lift, which sounds odd (maybe skirt_lift_with_mouth?).