Hi, I'm too lazy to browse through all the topics, so some general feedback for your stages :
Express 2 Death : The shadows of the characters are really too dark and don't match those of the stage. Setting them as parking lot should be fine.
Orochimaru's Forest : Not much to say. We can sometimes see some "gradient colorloss" towards the border of the stage, but that's Mugen's fault, downgrading the quality of the image on screen.

You really made sweet anims, and that's nice.
Suzaku Castle (tested on first version, disregard that if it's been fixed in the update, although you only talked about a problem when jumping) :I guess the values for the parallax are kinda perfect, but not those for the element just behind the floor.
Move the characters from left to right and look closely on the pink line. You'll see the wooden floor moves compared to the "wall" just behind it. So either you have to change the parallax a little, either you have to modify the wall's velocity.

Apart from that (which is already nitpicking), very nice job. Good sprite rips, good seperation of the layers, correctly set animations => nice stage.
