I did take the step also. I deleted about 10-15 apks' from system with EStrongs FIle Explorer, you have the option to mount the system as rw.
I deleted de demo.apk, all cell function, contacts etc etc.
I used this article as a guideline:
http://wiki.cyanogenmod.com/wiki/Barebones
Along the line I probably deleted 1 apk to many, because when opening the keyboard an error popped-up, but luckely there was also AnSofkeyboard installed and after selecting that when, no more errors appeared.
I only use the reader for reading, so no notes taking, no browseing. So I don't know if I killed some functions in the background.
When is started deleting the apk's, my battery perecentage was 70%, and now still is after 4,5 days, where I normally would lose 5% every 2-3 days.
If I look at the battery usage, I see 100% for device standby, while I read 1-2 hours a day.....
Before deleting the apk's, I saw 95% of cell-standby, so probably the cell function did try to do something.
I'm wondering how long my battery will last now after a full reload......