Items that need Deleted/Reworked and why
TL;DR: Change(s) suggested in Bold
Trinity Force (removed)
Less because it's a super strong stat stick on fighters/tanks, but because for those same classes it adds burst, durability, mobility and CDR. Tanks and Fighters do not need their mobility/burst weaknesses covered by a single item to the point it's an added strength. The only way to keep this from being a problem is to remove it.
Duskblade (reworked or split into two items)
Discounting the fact Lethality was a mistake in general and completely mismanaged by Riot's balance team, this item is what the entire Assassin class is balanced around. It grants free damage, free ward control (which is the biggest counter to assassins) and additional mobility (which Assassins are already super strong in). Splitting this item into two like Zhonya's Ring once was would probably be optimal for Assassin balance. At least in the split case, it adds a lethality option for marksmen/supports without either item straight up being a must buy.
Deadman's Plate (Reworked)
A Juggernaut's favorite item, it covers their major weakness of mobility while also adding to their burst and durability. It just needs to lose the mobility. Once the mobility is lost, it's no longer covering a weakness.
Boots of Mobility (Reworked mechanic)
It's effect of "out of combat" needs to be extended to champions being nearby. You should not be able to suddenly run down/escape an enemy champion just because they didn't hit you for 4 seconds.
Infinity Edge (reworked)
Giving this item the same problems as Essence Reaver prior to the rework wasn't just a mistake, it was hypocritical of Riot because it's the same reason they reworked Reaver. On top of this, there's less than a dozen champions in the entire roster who can use 1 of IE's effects and only 1 of them can use both effects without an additional item. Have IE grant a bare minimum of 5% critical chance at all times regardless of other items. This way it's still not overbearing enough to be a "must rush" item but it's no longer useless on its own.
EDIT: Missed one.
Stormrazor (Reworked)
The problem with this item lies mostly in its stats, rather than its passive. It gives every stat a Marksman could want with a mini crit after no attacking for a brief period. The mobility granted by the passive could be reduced a little but a better option is to simply reduce the stats it gives. That would mean changing the recipe, best by removing 1 Longsword and instead putting that price into the combine cost. Alternatively, Swap the BF Sword for Pickaxe (again, putting the cost difference into the recipe).
Questions? Comments? "You're fucking Silver"?
. And In fact if you remove the MS boost on Deadman's. It becomes pointless to build. You should just build Randuin's because it gives you sticking potential and more brawling potential. The Engage potential of Deadman's is the only reason you build it over Randuin's
attack speed removed, +15% critical strike chance.
Critical strike chance removed. Movement speed removed. +25% attack speed.
Unique passive; Runaans blessing (Ranged only, fires two bolts that can critically strike and apply on hit effects). Can be purchased on ranged champions. Upgrades are still locked to melee and ranged.
Movement speed removed. Critical strike chance reduced to 25%. +40AD. Now builds out of
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Movement speed removed. Critical strike chance reduced to 25%. Attack speed reduced to 25%. Builds out of
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Movement speed removed. Critical strike chance removed. Attack speed increased to 70%. +30AD. Now builds out of 
Attack speed reduced to 35%. Critical strike chance reduced to 25%. Now builds out of