My solution. Each club younger than 20 years can have an academy, each club over twenty years old gets father son.
Every five years each club can have a max of three picks from F/S or academy for free. They can use these all in one year or spread them out depending on the talent coming through. The five years is a rolling five years.
If a club want more than the three picks then they can have one per year, which would be governed by the rules as they were, i.e they can't get them for their last pick and would need to pay close to market price for them.
This sounds complex but is actually fairly simple and allows for forward planning by all clubs, and removes the disadvantages of having F/S coming through or academies.