Bad components? Phage is often a rush item since it can make up for a lack of boots early game with it's speedboost on hit, and kindlegem gives cdr. I'm more concerned with finished items, as there's plenty of problems with the vast majority of items about multiple slots being wasted on components.
Adaptive helm has cdr by the way; GA is often picked up by champions that already have either several or a significant safety net making it frustrating to shutdown said user.
Sure you're not thinking of zzrot portal being removed?
Most zeal items give critical hit chance lol, but they also often have extra utility ontop of damage amplification, which is why I didn't specify statikk shiv.
Lethality only falls off if their target is stacking armor, and lethality itself can be stacked from multiple items and the rune sudden impact, and scales up over the game.
https://na.leagueoflegends.com/en/news/game-updates/patch/patch-622-notes#patch-assassin-itemization
I'm well aware of the problem of support items being too gold efficient, seen riot hamstring their core builds on multiple occasions because of being abused by nonsupports.
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however, zhonyas has the strenghts of those items, but none of the weaknesses. its not situational like adaptive helm, it doesnt get ouscaled like duskblade, its good on its own, unlike zeal items, its not inneficient without the active like ga is
You sure about that on raw stats, because without the active it only gives 75 AP, 45 armor, and 10% cdr, for 2900 gold. Compare rod of ages after 10 minutes, 100 AP, 400 mana, and 500 HP costing 2600 gold; cooldown reduction is excessively available ever since the mastery and rune merger, and they have similar effective health, but roa gives more power if you're patient, You can thank wolvius for reminding me of it, but I didn't include it because of it's masochistic sustain passive. Also hourglass suppresses the user, preventing movement abilities items and spells; not to mention advertising being setup for combos with it's bright gold sheen and ching sound effect. In this burst or be bursted meta allies are more likely to leave you to die than give coverfire anyway.
Ohmwrecker was a joke to make sure you're paying attention lol, it's bloody terrible.
The difference between edge of night and banshee's veil, is that the former is an on command spell shield, while the later is passive but has it's cooldown reset whenever you take damage from an enemy champion. Good luck getting more use out of veil if the enemies have any DOTs, AOEs, or global abilities. The inconsistency you mentioned is probably user error (or server error as the last few patches have been unusually unstable), there's a brief channel time to activate edge of night, it's supposed to be a preparation step before tackling an unaware opponent.
That and lethality items are pointless on magically inclined assassins. However there's 4 runes that give cdr, possible to have 20% without items.
Tanks are just CC bots anyway these days since they don't last in teamfights, and I agree lord dominik's regards is better for burst, but your post was about overloaded items. Mortal reminder cripples sustain and ignores some defense, not everyone builds armor anyway but most have some sort of regeneration.