I think your form is going to break down a bit when you're above 90% and especially when you are above 95%. That said, if you're looking for something to work on, I'd say you might try improving your starting strength. It looks like you are slower off of the floor than most conventional deadlifters.
I totally agree with the statement above. When you go balls to the wall your form will break down. You diagnose the problem, work on the problem, raise the bar again. Anyway, I'm going to repeat my mantra of deadlift from a deficit. If you look at any of my deadlift videos on youtube you'll see I'm always explosive from the floor but my lockout is weak when I've maxed out. Start with speed pulls from a box to get your starting strength to match your strong finish.