What we need is a new xp and gold system to get the people motivated again .Maybe a mix of the old and the "new" system. So until lvl 30 or so you get xp and gold in the normal way per min.
After that you get something like the old system, only xp & gold for kills and fighting with the team.
Nothing is worse to get killed in the first minute while having a nice x5 and then you have to hope your team wins the round. And then if your team looses,you have the main reason for GTXting i think. But when you finally have your sweet x5 you just dont want to quit and feel forced to keep playing because who the hell knows if you ever get your x5 back this day. This was just an example.
It just came to my mind and i was too lazy for a new topic.