Advice on stepping piano files

[TheSilentLord]

So all the files I have stepped this far have been pretty stable BPM with a constant percussion going on in the background. This time i'm trying to step a piece of piano music. Which piece? You probably guessed it - Touhou! To be more specific, this one:

http://www.youtube.com/watch?v=sQaFz1wqVGM

As far as i know this version hasn't been stepped yet, though.

Anyways, as you can hear, the speed of the music changes constantly. And so began my adventure with DDreamStudio's sub-beats. After a while i think I've got it about right. But I need some opinions on what I have done so far. I've stepped 1:15 of the song and a few problems have come to mind:

- Some of the speedups/slowdowns are so short/quick that you can't fit a whole beat in between. This results in a very long beat or a very short one. At the same time it makes playing the file with an Xmod crap. (though who plays with Xmod anyways, I recommend playing this with Cmod)

- Because we only have 1 instrument, the file becomes very easy. There just aren't that many sounds to step to. This far the file is about 5,5 NPS and although I myself am fine with an easier chart, I was thinking about how it could be made a bit harder.

Please spare a few minutes and try out my file. I'd love to hear your opinion of the way I tried to handle the speedups/slowdowns and also how the chart could be made more difficult.

DL from mediafire

http://www.mediafire.com/?j5a1z9d93l8c49g