I've been a fly on the wall at MMOC for a while now, and one thing I've noticed is that whenever anything changes, it's always fifteen-year-old punks lashing out at one another from either side of the argument. Worse yet, people who get the gist of something usually end up crit'ing the forums to kingdom come with walls of text.
At the risk of being trolled, I'm going to offer my opinions on popular subjects as concisely as possible. For now, only two issues come to mind.
Gear Score (Still? People still talk about this? Christ..)
When you don't have the time to meticulously inspect or interview each individual in a 25-man, Gear Score is a quick and easy means of determining a players maximum potential. It has no bearing on the player's actual skill. Put simply, a player with a 5300 GS is far more likely to break 8k than a player with a 3200 GS, regardless of whether or not you're properly geared. Take it with a grain of salt.
If you find that GS has too great an effect on your ability to get into groups, then join a guild. Guilds are far more understanding, and usually give you a chance to be interviewed, which allows them to see whether or not you know what you're doing. Easier done than said.
25-mans in Cataclysm
Click here
Ctrl + F --> Essentially
In my years playing World of Warcraft, the primary reasons for raiding have been (never at the same time): loot, lore, and fun. I think that's all well and good, but judging from how people act towards one another, the biggest reason for raiding is respect. People respect those that have downed Lich King 25H. People respect world firsts. It's not about loot. It's all about respect, and guilds get respect when they down the most difficult content, especially if they're the first to do it.
If memory serves, people who completed Sarth3D in 10s earned more respect than those that did in 25s, and people were fine with that. In fact, I'm pretty sure there's a number of ICC fights that are more difficult in 10s.
Achievements will still be around, and so will the competition and respect.