Been playing around with dustcombos, and found one I liked. I don't know if it's old news, if it's been posted before or anything, but here goes:
Dust -> j.D, j.D, j.D, j.D, alpha blade, frc, 46, j.D, alpha blade.
Basically, when you slam into the wall after alpha blade frc, do the new move (whatever it's called) to track the enemy while he's falling, do j.D -> alpha blade. If you time it correctly, you get knockdown. It does slightly more damage than the regular dustcombo and gives you a knockdown, so I thought it was nice. X) Hard as hell to time correctly, and doesn't work in corner though.
edit: baah, god hates me. it doesn't work against quite many characters, as the first alpha blade misses, haha.
