Where do you find this information or do your research? I agree that is definitely the fun part of it all, and would like to research more.
Unfortunately, all the ol'time good stuff has slowly disappeared off the net as a lot of the main info sites were actually fan driven - most of who don't play the game anymore leading to their sites either dropping off the net or being woefully out of date

About the only current info sites I can recommend would be the SOEand Flamesforums - in particular, check out the class specific forums plus the wikia. Personally, I think flames and the wikia have more info than soe atm.

Each of the forums suffers in that there are a lot of really dumb questions and comments (mostly smack talk) filling each of the threads requiring a fair amount of speed reading to weed out the cr@pola - basically, the simple approach I follow is when I find something interesting, make a note then I try it out myself and see if it works - a real pity is EQ2 doesn't have an elitistjerks forum

As an addition to the information above get ACT - I would also recommend getting the single/double attack addon. With ACT you can basically analyse what SD/CAs are doing the most damage and see the results of your tweeking

I know that's not really a nice simple answer in relation to a gold-mine of information but, unfortunately, that's all we really have to play with