really a great app, surely a must have for a N900...
i have a few suggestions..

1) Enable/disable function on Power-button Menu..
2) Task Swapping on Volume Rocker
3) N9-Style TASK-SWITCHER(with volume rocker)
__3a) Vol-Up for switch btwn DESKTOP/APP-MENU/DASHBORD
__3b) Vol-Down for switching between Active-Tasks
__3c) disabling it from Power-button Menu will give normal vloume-control
4) ADD IT TO CSSU

i dont know if i am complicating it, but we can achieve the above function(3a & 3b) on volume rocker at th same time..
we just need to make two different modules.. one to achieve N9-Style swapping & other for task swapping you have already achieved.. one can be added on Vol-Up & Other on Vol-Down

Thanks in advance