I was browsing World of Matticus and he mentioned a phrase "principle of progression".
What I think he means is you should do Step A before moving on to Step B or trying to skip A and B and go directly to C.
I mentioned briefly in a another post about how removal of attunements allows you to skip what actually isn't a bad idea - gearing up your character and gaining some experience.
When 23 of your people are ready to move to the next step, but your 24th and 25th person are blocked due to attunement its a bad idea. But when 3 to 4 of your people out of a 10 man team either aren't willing to wait or haven't bothered to spend time getting gear by other means (pvp, badges, heroics, or simply normal level 70 instances) an attunement process is preferable. Especially if you can't get them to understand why minimum raid requirements exist.
I call it the "run me through deadmines" syndrome. Someone on an alt in quest greens thinks its okay to have another group run them through a place like Karazhan. If the group agrees? Sure no problem, but I can bet you epic mount gold the people who have actually spent the time to gear themselves up aren't so eager to spend more time in the same exact place to get an alt some easy gear. Guilds sell spots for this exact purpose!!!! Because they want a return on the investment of their time.
1 day ago