I am curious as to why you are seemingly against it, if you feel like indulging me to your reasoning. Also, previewing the sustains based on the crazy status doesn't have to be transparent, a darker/lighter shade can just as easily perform the same function of indicating that a chord will sustain ingame. If you manage to add it in, then I think the most intuitive thing for charters to do when trying to shorten the preview, would be to use the scrollwheel and attempt to reduce the sustain, which doesn't do anything unless crazy is enabled... I guess I'm just thinking ahead. Anyway, I'm just trying to make EOF better, so I hope you don't take any offense from my suggestions.