If you've played the level 70 game and done the Shattered Sun Offensive dailies, you probably know where this is going. On a good day, doing the complete Outland daily circle, I can come out with somewhere around 10 disenchant-worthy items between regular drops and Shattered Sun Supplies. Leafshine says she can sometimes spend up to 10 minutes working on Disenchanting, and I can believe it. Every time I process a batch of greens on my disenchanter, not only does it take some time to get through with them, then I have to process multiple piles of reagents, and figure if I'm going to store them, sell them, or use them to make a tailoring blue which I will then disenchant into a shard.
If added disenchanting for friends in there, I could spend all the day disenchanting. I have to commend Leafshine for putting up with it, and I don't think it would be a bad idea to start charging a disenchant fee - even if it's as simple as taking a cut of the materials. It's one thing to expect a disenchanter to be ready to disenchant dungeon blues that no-one needs, but it seems like another to mail your stuff to them and expect them to take their time to disenchant it free of charge. I know that friends should help each other out with tradeskill stuff, but there's a limit. Yeah, we're friends, we've raided together, but if I expect you to take 10 minutes out of your play time to help me out, throwing you some gold for your time seems like nothing more than common courtesy.