Personally, I have no issue with father son selections, it's the cost which is the rort.
I think if Brisbane had to trade pick 18 & their F1, maybe also a player for a top 5 or 10 pick to pay for Levi - it would feel like a fairer system. If they want him bad enough, they'd make the trade work. In that scenario, there is still the romance of having access to a father son, you just don't get them for next to nothing.
As for the academies, as much as I dont believe they should exist, the cost should be the same - within 5 or 10 picks of their selection.
At least the Academies serve another objective - home grown talents in non-football areas. I actually think it would be fairer if the four northern clubs just got one each year outside of the draft, and perhaps didn't get picks in the 2nd round to even it out. But Heeney plays another sport if not for the academy. OTOH, four first round picks from the GC Academy is a mockery of the whole system.
Not a single AFL supporter would give the game away if the Father-Son rule was abolished. It's amateurish, unfair, and entirely needless.