They have widened the lines to try include the "grey" areas of frames for the last few years. If the lines overlap then it is not offside, there has to be a gap for it to be offside. The gap could be pixels again still, but the attackers still get more advantage. TBH I'm fine with it all. The same bollock or heel is a problem for all teams and if you start adding even more vagueness then where do you go "that is definitely offside"? Wenger wanted there to be "fresh air" for example. But all you are doing is moving the measuring points.