The first and third paragraphs have the air of whining, and the second paragraph has the air of wishlisting. Please try to keep your comments constructive.
I'm surprised there hasn't been more discussion on how underwhelming Killing Spree actually is. It pretty much ranks as one of the worst 51-point talents in the game. A 51-point talent should be something you want to get, not something you're reluctant to get and even with the 20% damage buff, it still is really bad. A talent that lets you voluntarily lose control of your character and possibly putting you in harms way isn't my idea of good design. At the very least they should take the multiple targeting system off of it, make it single target, and not put you in an uncontrollable "ninja dance". Some people will say well it's cool to use on trash packs... well you're probably better off auto attacking with BF up and spamming FoK on multiple mob trash packs anyway.
I'd like to see something in the way of a Death Wish type talent, even something like a self-castable Hysteria would be cool. Obviously this would have pvp implications but you could have various penalties to go along with it such as, reducing your armor in half, or even zero, doing a hysteria or death wish type effect, making it so you cant use CloS in conjunction with it so you are more easily cc'd. I'm sure a decent solution could be thought up.
I agree with the sentiment of just removing the Improved SS talent, I can't even really believe this has been overlooked all these years. The tree needs to be shifted now that they changed lightning reflexes to 3 points, it throws it off a bit, whereas right now it's extremely well balanced, in my opinion. Also the synergy of crit right now is just too good to ever use anything other than a fist/fist or fist/dagger combo. Between Lethality, Prey on the Weak, and the SS glyph, why would you ever use a sword of the same caliber over a fist? I can't see sword spec ever making a big return unless we have a reverse situation like we have right now with main hand itemization.
Overall, the changes are ok, so far, I'll give blizzard some credit and hopefully they bring rogue DPS up to where it should be.