[sc00b4s7eve]

I've found, a couple of the biggest culprits to be PagePool and Cache.
Different GUI's dont need the same settings. I ran one of my Custom ROMs with a 24Mb page pool and it chewed up 50% battery just sitting there in the 8hours I was asleep(of course keeping tons of code preloaded and making the ROM fast as hell during the day!)
That same ROM lasted all day and night with only 12Mb Page Pool. Go Figure.

Besides pagepool. FilterCacheSize is the other batterykiller for me.
Anything above dec:4096 seems to dramatically lower it.

Don't forget, If you change the ROM durastically, like switching to the Fastcharge drivers or a new build of the graphics drivers, the battery seems to learn proper power output after a day or so. (Placebo? most definitely tru for new battery drivers at least).
Thanks for the Good Info & Good Luck