This is a tough topic, and I'm certain my remarks on fixing the future of hunting will be taken as pessimism and chicken little syndrome, so I apologize up front. I personally don't think we can "fix" the problem for several reasons, not the least of which is most folks today don't see it as a problem for many of the reasons already mentioned. It is a problem/concern for us because we care about hunting (and fishing and just being afield).
Many of us in the 50+ range grew up in a rural area and agriculture was common. That's changed - seems today the kids are mostly urban and agriculture has diminished due to residential expansion and changing work forces, which means there are fewer places to hunt or just get out to enjoy nature. Farming is hard work; farmers (or the children who inherited the family farm) can make more money by selling the property for development than they can trying to fight the regulations, droughts, insects, fuel costs, equipment and maintenance costs, etc.
My Dad took me to the country (and we lived outside the city limits on several acres then) almost every weekend and many week day afternoons. I loved the outdoors and biology - especially field biology - was my favorite subject in high school and college. Today, most biology students in college are going for the lab courses, not field courses. DNA, microbiology, etc. are the hot topics - I took some upper division biology students to do a stream survey last fall and the majority of them would not get near the water because there were weeds between the parking lot and the stream - several bailed early because of mosquitoes. The number of field biology instructors has decreased and the number of lab-oriented instructors has increased over the last decade in many universities.
We know there's a problem recruiting hunters. Our society has changed and it will continue to change - probably not along the lines of going back to what some here have expressed as being the "good old days" of family values and moral behavior. The issues with organized sports (and parents) many of you have so accurately described is now the norm for a growing population of urban dwellers.
As more people become urbanites, the less interest they'll have in hunting and fishing - the consumptive sports. In fact, just the opposite trend might well be the norm - PETA, HSUS et al will gain members thru collective ignorance of wildlife management principles and this will result in more pressure on those who do hunt. There is already a substantial trend among some "hunters' to pay to shoot an animal in a pen and feel like they've really had a great "hunt." Remember the early "hunts" where a guy could sit at his computer and shoot an animal with a mouse click? Awards for shooting genetically engineered animals.
I could go on, but it does seem to me that the loss of habitat, places to hunt, and changing societal "norms" are stacked against hunters of the future. Hopefully, I'm wrong. Hopefully, someone will find ways to reverse the current trend and begin increasing the number of hunters and places to hunt. I sure hope so - very much.