Tongue Tie is something I see on a daily basis. It's tough to suggest treating when the mother isn't experiencing pain and baby is gaining. But what we do see is a late onset supply problem. Dr. Jack Newman talks about it here.
Nancy Mohrbacher writes brilliantly about milk production and how many times per day a mother needs to empty her breasts to maintain supply. This is often a bigger issue when Moms return to work, but it can be something that comes up with mothers working to build their milk supply.