Re: Challenges -
You're not getting "just" 500 cR for beating a campaign mission. You're getting 500 cR
in addition to all the cR you get over the normal course of the mission itself. Bungie is trying to get people to explore the campaign options & its skulls. Use this opportunity to try something fun. Winter Contingency Speed Run. Exodus no death run. Whatever.
Re: cR boosting -
The problem with boosting is twofold. First, someone's rank was intended to be a baseline for how much Reach someone had played. Although it is NOT a measure of skill, you could still know, at a glance, how much the Sergeant, Captain, and Lt. Colonel on your team had played.
But now because of boosting the # is meaningless. I'm a captain and I did it through no boosting of any kind. I haven't even played much Score Attack. This represents about 45 hours of play. Any LEGIT Captain should be familiar with the new guns, with map layouts, etc. But now, you have no idea.
Second, our cR levels are tied to rewards. I've been saving FOREVER for the Heart Attack armor effect and I'm still a long ways away. People are arguing that cR has no value. But in a multiplayer context, that isn't true. Virtual items have social currency when you can show them off to other people. Boosting to get the Heart Attack effect devalues me earning it legitimately.
Lastly - just an interesting game I played last night -
It was Invasion boneyard. I have the skunked achievement, but my five friends didn't. So we coordinated and shut down the elites. Yay! Achievement unlocked. But then we spawned as elites and... also got shut down :lol
A little embarrassing, considering we were a premade party. It was really just bad luck though. We had a hill taken down to 1 second 2 different times.
So... achievement unlocked for both teams I guess? We're all winners? Eh.
This is the game:
http://www.bungie.net/stats/reach/gamestats.aspx?gameid=130681276&player=ErrorJustin