The sidebar keyboard navigation is a big one for me that's been missing. And the folding arrows will help. I don't know why you'd want them to fade but nice that it's up to you.
Or, "I found that you, the bank, left all of your customers' money and social security cards and personal records (including mine) in an unlocked windowed room facing the street where anyone might walk by and steal all of it. You might want to lock it up."
"Prove it."
"Ok, I'll just show you how ridiculously easy it is to open this door . . ."
"Thief!!"
Oh my gosh man. That's so bad. You simply replace the account ID parameter in the request URL? That's so bad. So so stupid on the bank's part. They should be showering this guy with gifts for pointing out such a stupid mistake to them and they should be going after whoever set up their system like that.