As of last chapter I had no difficulties understanding the plot progression and telling the characters apart. Actually, I think the plot is pretty straightforward, even though it might seem confusing because of all the characters and details. I don't remember all the new characters, though, but that should be expected considering their limited appearances and the monthly releases (and the hiatuses). And the art is very detailed and impressive, and not as confusing if you know what's going on.
Still, I hope this arc will end soon, because I'm really curious about the outcome.