For those pics where the subject is offering themselves to the viewer examples post #563420 post #456809 post #561002 post #530447 could do with different wording but I think "Offering" would work fine. The tag is currently being used as ritual offering type of situation but only has three pics under it so they could be moved to ritual offering without much effort.

The presenting tag works fine for what you're describing. post #530447 doesn't really fit the theme though.

Presenting is more the pose than an action by the wiki description, though I will admit I had not found that tag before making this topic. The offering would go for text and suggestiveness and with it posts like post #530447 would fit, I see the presenting could be like a more spicific version of offering just as cum_inside would be a more spicific variation of cum this tag will add a broader range of that type of image to a tag.

Offering, however, would run into conflicts with the more obvious intepretation as a Shinto, etc. temple offering. -1 for the name.

offering_self, offering_to_viewer, something of that nature perhaps. I am not set on a name for it but anyone can suggest something right.