None of this is true as anyone that's not a sucker will just kick them.
It wont be abused since all you have to do is kick them which most will do.It's not about whether you care or not, AFK leeching is abusing a flawed system similar to botting obviously both are going to happen. AFK leeching has a lesser impact in a party system than it did in FFXI, is that a justified reason to leech?
So basically you want SE to put a camera in every house?Leaving a party doesn't stop them from AFK leeching since they can just form a party by themselves. If you don't care about people abusing the system just don't post, flaming is only going to tarnish your own name and make you look bad.
edit: I am also not flaming you but having a discussion as I am against what you are for. This isn't about some bots or RMT. It's about you mad at people multiboxing or to refuse to just kick leechers from the party(again not flaming but this is what I get from your posts). Anything else is just asking for too much.