Lets do some math. If everyone flasks and gets a 200 dps increase (Your number), assuming 15 dps in a 25 man raid thats a 3000 dps increase. 3000 dps over a 5 min fight - which is a very short fight compared to most in ICC - comes out to be 900,000 damage. How many times have you wiped with a boss having under a million health left? How is 900,000 extra damage done in 5 minutes not worth 40g per raider?