I remember when GA gave Armor and Magic Resistance instead of Armor and Attack Damage.
It was really fun playing a tank at the time but not so fun playing against a tank because every tank would build this item.
With this version of GA, you could run into the enemy team, kill a backline damage dealer, die, resurrect and then run away.
Just imagine the current version of Cho'Gath with that GA plus all of the other items that he usually builds.
Riot just changed GA so that it appealed more to the type of champion that they wanted to build it. Squishy, high attack damage dealers.