I think the problem is that not everyone is going to have the same experience or the same results. For example:

I have Catorise and one of the two flashlight add-ons (I use the one that turns no the camera flash leds), and have had them installed since PR1.1. I've seen no significant battery drain from either, and in fact have gotten close to 40 hours on a single charge routinely over weekends most of this past summer. I also run Titan's kernel at ulv 500/900, and have lots of other mods, though I do not use MohammadAG's hildon desktop replacement. (Not that there's anything wrong with it, I just haven't found a need to use it.)

I think for any list like this to make sense you have to make some assumptions about what's at the base. The problem is, that's not a good assumption to make in this forum. I'd love to take a poll to see how many people are running stock kernel, desktop, etc. I'd bet that most people people that have found this forum aren't, making a list of things that cause problems on a stock system kind of useless.