D3K pretty much called it tbh...
On one had it is quite silly how they've managed to drag it out in this way now with Axe and Chuck in cahoots... on the other hand it is still really, really enjoyable to watch and so I'm not too fussed that a story that should have been 1 or 2 seasons max is being dragged out in true US TV style for a 4th season.
(though the whole nonsense at the end of that last episode about how Chuck has got no issue with Axe because he's no longer the US Attorney for the Southern District is a bit dodgy, the whole thing was framed as a personal crusade in season 1, Chuck really wanted to go for him for personal reasons, didn't want to just settle, wanted to stop him trading etc..)