I just found this fic in the last year, but it it is NOT a new fic. Now I swear I saved the link, but I can't find it in my bookmark file. It probably lacks a description field and without the title I can't figure out how to find it.
The story is short. Ranma gets some kind of magical artifact that lets
him and Akane not only swap bodies, but skills. Akane gets to be in Ranma's body and have access to his martial arts skills, while Ranma is in Akane's body and has only her skills.
They had been arguing about how Ranma could easily solve all the social problems, and when they do the swap, Akane avoids Shampoo's glomp and tells her off among other things I can't remember that upsets several of the other cast members.
Then Ranma in Akane's body gets kidnapped, and they have no idea where she's been taken. Akane uses the artifact to make them swap places and be back to normal, with Ranma now having his skill and power back so he can free himself.
Then Cologne and several others show up mad at Ranma for what Akane did the previous day and the fic ended with Ranma having to deal with all the problems AKane caused in his body.
I think it was mentioned here, or the author who wrote it had one of his/her stories linked to here, but I lost it again.