The key about GA is it takes your skill and choices as a player as a whole and either rewards or punishes the player based on skill and choices. Machups based on gp is the best and easiest way to showcase that. If I chose to not pursue jkr or darth revan and instead focused on droids and jawas then that's on me not on my opponent of equal gp who made smarter choices. As for long term players having a disadvantage against newer players, that is also on the individual player....a player of 8 months shouldn't have the same gp as a 3 year player to begin with. If they do then the 3 year player was doing nothing but tread water for 2 yrs 4 months