if i am not mistaken, the term 'excepting you into the tendo clan as a bride' would actually imply that soun would marry her. 'as a bride' means to marry into a family, and soun is the only known male of the clan. the translators only simplified it. and i'm not sure if he was joking, concidering the way that the fathers are and how silly the series is.
naturally, even if i was to make ranma a girl in mind and completely have her except herself, there would be no way that such a marriage would pass, so it's kinda a moot issue. well, aside from making soun look like more of a putz :3
random thought... i wonder how ryu kumon would taked ranma's locked state... i myself concider three outcomes:
1)concern over a rival and fellow fighter
2)teasing... a lot.
3)not caring in the slightest one way or the other.
i may not use him for the r/tt cross, but i or someone else may use him for another lock fic, so i guess it would be good to think about his reactions too (i feel like he gets used far to rarely... there is such potential in his use)