While I think info is great, I'd write the pamphlet with an emphasis on NOT overwhelming people. While some moms get into it (like us!) I think many moms consider a diaper to be just a diaper, even if they use cloth, and not an important topic of conversation. So, if it cloth seems complicated (i.e. too many options), some moms might decide sposies are just the simpler choice.
The other thing I'd love to see in a pamphlet is a great review of prefolds, contrary to the "prefolds are so yesterday" attitude you sometimes see. Prefolds really are great-- so easy, affordable, and effective. When I first started on my cloth venture, I'd be aghast to read reviews of people saying that a particular diaper didn't work for their child, in terms of fit or absorbency, esp. if a single diaper cost $12 (remember, moms will be comparing one diaper to a whole pack of sposies). It made finding the right diaper seem so scary and expensive.
Ohh, and I think a good slogan would be, "Trust cloth." Since I used sposies on DD for a year, I really trusted them and it was hard to trust "just" cloth. You could do a thing like . . .
Trust cloth to . . .
save you money
prevent rashes
keep your baby dry
help the environment
Just a few things off the top of my head, not well-worded, but you get the idea!
Great idea, though! I'm so glad you're doing it!