Query: Sudden Impact, Champs Like Riven, and Common Hatred of Lethality Items??

If many a number of players hate how busted Lethality can be, due to how much extra damage its causing to be thrown around, why does Sudden Impact let characters like / / / who have or CAN HAVE extremely low CDs on their abilities that would proc Sudden Impact, essentially have what I'd call a Permanent Extra 10 Lethality & 8 Magic Pen from the start of the game.

Sudden Impact: After EXITING Stealth, or using a Dash, Leap, or Teleport, dealing any damage grants 10 Lethality & 8 Magic Pen for 5 Seconds CD of 4.

Regardless of whether this Leth/MPen activates only after dealing damage and then you have it, these ARE champs who have something of a way to mitigate damage after creating the opening to activate it, making their 1v1 potential asinine.

With Certain Builds, namely The Max CDR build, which is Unsealed Spellbook, Cosmic Insight, and Lethality items(and or Black Cleaver,) cause they all have freaking CDR, and the option to grab Lucid Boots, which results in 30%-40%CDR(W/ or w/o Lucid Boots) on Summoner Spells, and 45%CDR for abilities, a Riven, Yas, or Akali who gets ahead can be utterly oppressive, though I find Riven the most annoying with this style considering the disgusting size of her Shield from E, and the fact at max rank she can Shield herself every 3 seconds practically.

Is Sudden Impact a rune that should be nerfed(like fucking Klepto)??? I think it should if only by increasing the overall CD to maybe 8 or 10, along with, or just primarily Unsealed Spellbook's passive Summ Spell CDR... Cause Ignite every 2 minutes, Flash/TP every 3. Heal every 2Min20Sec, is a bit obnoxious, when Lethality lets them burst you, and just about anyone else if they got ahead, and you're not shutting them down with every CC your team can throw at them.

Course I'm fine, also, with Nerfing Lethality directly, or the amount of passives/stats thrown into the Lethality items. They all give CDR, which lends to this annoying pro-diving build. Duskblade turns you into a ward destroying monster with (stupidly easy for some)Conditional Bonus Damage, Youmuu is the chasers best friend, and Edge of Night rare as it is, is your knock-off Banshee Veil. Though as far these items go, its mostly Duskblade that I'd address that can lose a passive and/or stat and still be stupidly effective.

As far as the Poll Goes, I tried to make it as fair and varied as possible

Edit 1: Poll Option 5 to be clear means: "What you're saying can be agreed upon, but what you perceive as problems, are Balanced"