Comprehensive adult catechism.
You can educate people about their responsibilities to teach the faith all day long, but if they don’t know and live the faith, it won’t do any good. Unfortunately, for many parents these days, “religious education” means “what time is CCD again?” not “how am I living out my faith and teaching it at home through my vocation as a spouse and a parent?” Heck, lots of folks these days don’t really recognize marriage and parenting as vocations. After all, a vocation’s something a nun or a priest has, right?
This isn’t something you can do on your own…it needs to be a Church-wide initiative. Too many of us have become lukewarm in our faith for many of our traditions to keep flowering. As an example, when I grew up, I had no idea what Godparents were for. I knew that they were at my Baptism and that they were basically like another aunt and uncle who sent me birthday presents. It wasn’t until many years later that I discovered as an adult the true meaning and responsibility of that vocation. If I hadn’t taken the initiative to learn about the faith on my own, I’d likely have remained a “cultural Catholic”…doing “Catholic stuff” because “that’s what Catholics do” without ever really understanding any of the real purpose behind it.
My wife and I actually agonized over our choice of Godparents for our son. We wanted to keep it in the family if possible, but all of our siblings have left the Church. We wound up choosing a pair of good friends who are Catholic. I don’t think the Church needs to have more restrictions on who can and cannot be a Godparent…but I do think the ones that exist should be enforced more rigorously. Unfortunately, this sets the priest up to be the “bad guy” when a set of parents are told that the unmarried co-habitating couple they want to the the Godparents can’t be, regardless of whether or not they’re someone’s sister and her boyfriend, or their best friends, or whatever, but so be it. It’s the parents’ responsibility to make a good choice, and it’s the priest’s responsibility to verify (as much as he can) that that choice is in fact a good one.