If there's one thing I wish, it is that hospital staff had more training in the problems that tongue tie can cause. DS had his tt picked up at birth, but I was told by the paediatrician that, as I was having no pain feeding him, it wouldn't cause a problem. Naively, I believed them. It took until he was 8 weeks old (and had dropped from the 50th to the 0.4th centile) for us to get it divided - I had to self refer to a breast feeding counsellor, who in return referred us to a doctor, but he had a 3 week waiting list.
Having it divided improved his latch, but it was never great, I think because he had had 2 months to learn the "wrong" way. My milk supply was always poor as well, and he was an unhappy, skinny baby, difficult to settle, cried all the time. I thought it was just his age (& maybe his personality).
I fed exclusively until 5 months, when he finally fell off the bottom of the centile chart, my MW starting talking about referral for failure to thrive, & I made the decision to supplement with formula. In the first 2 months of formula he went from below the bottom of the centile chart to the 75th centile, where he has remained (he is now 18 months), and changed from an unhappy, colicky baby to a happy, contented one. But my happiness over this was mixed with guilt that I'd "failed" at breastfeeding.
I'm pregnant again, and dreading a repeat of the experience - I spent most of his first few months in tears because of his failure to gain weight, people's comments about how tiny he was, the feeds that took over an hour and he was clearly still hungry at the end, the guilt... All because of the paediatricians inability to recognise that pain is not the only problem caused by a tongue tie. I don't know how much influence you have as an organisation, but surely everyone working in a maternity ward should have the basic training to recognise this?
Sorry for the long rant!