Great list of pointers, but when it comes to a charity quilt, I agree that the quality should be there in terms of good material and proper techniques to make it extra warm and sturdy, but perhaps we should be careful of donating anything that's so beautiful it might be stolen. Remember a lot of needy people are living temporarily in shelters with others, some of whom may be drug addicts or otherwise desperate enough to try to make a buck any way they can. In fact the person who receives it could be a druggie who might sell it to buy drugs, even though it's desperately needed. Also, seriously there may be times when quantity takes precedent over anything very time consuming. Better 5 kids warmed up with stitch and flip quickie quilts than one with a beautifully pieced quilt like one that you might make for your favorite newlyweds. There is nothing wrong with devoting more of your time and energy to your nearest and dearest. Nobody has unlimited time.
Another point that should be made is that if you're a beginner and need practice or have made blocks that you are not terribly fond of, don't hesitate to make quilts for charity. Providing warmth and comfort should be the first thought. I'm absolutely certain that most people who receive a quilt are not going to be picky. They will know that someone cared enough to help. If it's so awful you'd be embarrassed, how about donating it to an animal shelter?