I'm with you for the most part Incineration, and you make some very valid points. But I simply disagree to some extend as in that I think they have at least tried to fix the problem of crit being absolutely horrible. While crit is still our worst stat, it's not nearly as frowned upon as say Cataclysm. Crit's value is so close to haste now that we are able to just equip what we get with the highest item level. There we a post on elitistjerks somewhere where they calculated it was always more beneficial to equip your highest item level item aside from one exception with I think a heroic item being better than a heroic elite item.
I wish Shadow Blades did something else for Assassination. Maybe increase all critical damage you deal by 50% when it's active, or something like that. Or hell give us Cold Blood back and rework it so it so it doubles all the critical damage we deal for a period of time. Just...something. At this point I'll be happy if we get a cooldown that turns us into a pink pony for 5 seconds.