NiHao.
     Hear are a few ideals im going to toss your way and hopes that one person
bits the bate.
     1) Lupin The 3rd / Gambit crossover.
     2) Megafight (all the best MArtests in Anime vs all the best MArtest in
fighting games).
     3) Record of Ranma War (Lodes War / Ranma 1/2 crossover).
     4) Whoever does Sailor Ranma, I want MORE!
     5) Any story involving Quartzite from Sailor Ranma (I know he is a
throwaway charater. Thats why I would love to see more of him).
     
Thank You.

Quartzite.
      "Whats with you and that crystal ball?"