AFK is a GSF problem, not a PVP problem. You AFK in PVP - there's nowhere to hide - you get smoked fast, and huzzah for an easy kill. But in GSF - weakling child in the SWTOR activity family, such as it is - AFKer's can just circle jerk around their flagship or fly off in the Ozarks away from the battle. So, if they substantially shrunk the operating parameter to stay in game and/or get rewarded, like with heading off foot maps and getting "exhaustion" (GSF could be "radiation belt" or whatever,) AFKers would have to stay close to the combat and would therefore either engage or be wasted.