[Rework Concept] Evelynn, the Widowmaker
Everybody knows that Eve is a high damage assassin with escapes and CC. But her kit is old. This is my rework suggestion for her. Also Riot you should do an Assassins Update this or the next year.
Passive - Expert Assassin Current passive is surprising, but Eve can be detected very easily.
Evelynn gains 10% less movement bonuses from every item (due to those high heels, it takes a lot of effort). Casting an ability gives Evelynn a bonus movement buff as if she gained all movement speed bonuses from items that runs out after 2s (/40/30/20(?)s cd). When the movement buff finishes Evelynn gains Getaway buff for 10s. Getaway: After not taking damage for 3s, Eve fades into the shadows gaining 10% more movement speed. New Stealth will be more hard to detect that the current one. If Eve stands still while Stealthed, she can't be detected, unless a Rengar ults or there's a vision ward nearby. (Recalling will reveal her) The first spell/attack out of stealth will deal 2/4/6% of the target's missing health as true damage.
Q - Deadly Spikes Current Q is very strong, although has a low cd. Also it's Eve's main source of damage if she's an AP One Shotter.
Evelynn targets an area. After a delay of 1/0.75/0.5s, she projects a spikes in every enemy unit that is inside. If 2 or more enemy champions are hit, Eve projects another wave of spikes which slows their movement and deals 5% more damage.
W - Devastating Pirouette Her Old W will remain as a buff to this new ability, even though it somewhat became her new passive.
Evelynn performs a spin, Ravaging nearby enemies that are hit. Killing more than one unit with Devastating Pirouette grants Evelynn Frenzy. Frenzy: Evelynn removes slows, gets Passive's burst of movement speed and can move through units.
E - Ravage Her current E is good, but not too good or less good.
Evelynn Ravages her target, slashing it 2/2/3/3/4 times and deals X damage for each Ravage. After that, her target is Injured. Attacking an Injured target deals increased damage for some amount of health it's missing.
R - Hope's End I can't lie, current R is pretty good but requires hitting many champions for it to work.
Evelynn marks an area. After 1s, all enemies in it are impaled to the ground (rooted) and dealt a portion of their health as damage. After the root ends, Evelynn gains a shield for each enemy hit. Enemies, who have been rooted, and are running away from Evelynn are slowed.
Please remember this is my OPINION for Evelynn and I'm not asking/pleading for these changes to happen, I'm suggesting them. I hope my suggestion satisfied you enough and if not feel free to tell your disagreement and what should change according to your opinion.