I thought these were awesome during ICC. You'd would have a weekly quest to kill a random raid boss of any of the WoTLK raids, and it would grant you what were then Badges, which is equivalent to Valor nowadays. I thought it was just one more way for you to get valor or badges back then without having to grind rare spawns or dailies or w/e. Not that i mind dailies because i really don't. I just loved the fact that it made people get actually form pug groups to do content that even though was old and outdated, was still fun because you werent going in for a full clear, maybe just up to XT in ulduar or Razorscale, or even killing Sarth. I think it would be cool if there was a weekly to do MSV/ToES/HoF bosses, just as an extra way to earn rep/valor and get pugs going again. I'm on a high populate realm (Arthas), xferred here a while back, and even though my guild went 13/16 Heroic last tier, i still enjoy pugging a few bosses normal or heroic, just for fun, on my lesser geared alts, because i can't commit conventionally "alt" runs because I dedicate enough time already to normal raid schedule on my main. But there are hardly ever pugs going on, a little more so now that new content is out, but like i said, with the new content im putting even more time into my main, raiding extra days and grinding rep/valor for him. Im talking for more down the road in a month or so, when i have the time to start gearing alts and stuff, pugs rarely happen, and weekly raid quests would definitely help spark that again, even if it's only to kill a few bosses.
/rant