Thoughts on the 6.4 changes to marksmen?

Main changes related to individual marksmen being:

Ashe Q stacks fall off one at a time. Q duration increased.

Caitlyn E cooldown lowered. W headshot bonus changed from a percentage to a flat bonus.

Ezreal R cooldown up as well as:

Manamune Now has Tear of the Goddess's stacking passive

Muramana No longer a toggle. Now always consumes mana to deal damage, but only when fighting champions.

Iceborn Gauntlet Size lowered, but gets larger with armor. Slow no longer lingers.

Jhin

Movement speed, health regen and regen per level increased. Passive mini-crits towers. Also W and ult count as single target hits (deathfire hype!)

Kog'Maw

Attack speed down.

Lucian

Ult range down.

Sivir

W's bounces now crit.

Items & Mastery changes relevant to marksmen:

Sterak's Gage

Health down. Build path changed.

Warlord's Bloodlust

Now gives lifesteal based on your missing health.