Just spied this new thread, good to see that you are still persevering with this.
A thought I have had, seeing that you are using QBW, you have 9 clickable locations with QBW so in theory you could have 9 brightness settings.

http://wiki.maemo.org/Queen_BeeCon_W...Script_Runtime
http://talk.maemo.org/showthread.php...pot#post735753

I still havn't had time to try this on my phone, I still need to upgrade to PR1.3, after that I will try to find some time for this.