I am very much looking forward to the new edition.
The biggest thing for me is the condition cull, I am so glad to see generic conditions replace the never ending torrent of model specific conditions that m2e quickly became. This turned me away from the game as I simply could not remember all of them and it made for a very gotcha centric, awful experience for me. I wasn't having fun, so I ended up taking a break from Malifaux shortly after book 5 dropped and that break quickly became the decision to stop playing the game until a new edition dropped.
I ended up playing Infinity where abilities, conditions and weapons are universal across the game rather than model specific, and if Malifaux ends up remotely similar I will be very happy, as I find this makes for a much smoother, pleasant gaming experience.
I wish more masters would have been culled, it's not too late Wyrd! (i'm not kidding, start with Lady J, she attacks helpless old men!)