So, Darius
Going off of what I can see on the abilities tooltips, so I may be missing some info.
Buffs
Passive: Now deals Physical damage (
anyone?) and applying 5 stacks to a target grants bloodrage for 5 seconds.
Bloodrage grants Darius bonus AD and causes his attacks to instantly apply max hemorrhage stacks.
E: Now slows its target
R: No longer has a mana cost at max rank (On live, it has a cost at max rank, but it is refunded if you kill the target)
Nerfs Passive: No longer grants 5% movement speed per afflicted champion. Q: Base damage down a massive amount At level 1, blade: 105>>20 handle: 70>>10 and does not apply hemorrhage Now has a delay
W: No longer slows attack speed, cooldown is no longer reduced for attacking a target with hemorrhage
R: Base damage down significantly At rank 1, 160>>100
Granted, I do not have all the information, but it seems that darius is going to suffer greatly in the early game due to his damage being lower and easy to build against now that his passive is physical. Once he gets Black Cleaver, he can get max stacks off with one auto (One stack from the basic attack, 5 from Hemorrhage ticks), so his midgame is going to be pretty good. His team fighting is going to be insane. If he can get 5 stacks off on the front line, he can proceed to flash-E the carries, and instantly hit them with the max damage ultimate.
If I missed anything, feel free to tell me.