Dancing, ballet in particular. I work with 3/4 and 6/8 time sigs a lot. It would be nice if I could have a more convenient way to make the pattern mode help me generate correct beats and measures.
Currently, I have to do the math, and then do it again every time I add a new pattern or change the beat or note length in an existing pattern. Clearly, the patterns pay no attention to the time sig of the song in how they grey out the measures either.
I have a big project to do and this would help me very much.