2 Items that need to be looked at
The first and most obvious choice, 
It is a late game item, the most expensive item in the game, AND IT HAS NO BUILD PATH. Death cap costs 3800 gold, takes 3 items to put together, and has a combine cost of 1265 gold. 1265!!!! It only takes 425 gold to combine the parts for infinity edge, which can be useful early game even before stacking crit as you can still get a random crit from RNG or a champions mechanic, whereas deathcap only gives you more AP, which is only useful if you already have a lot of AP to multiply. There is only 1 champ in the game that could possibly buy deathcap early as he can "create" his own AP, but even he has more pressing items to buy.
Mid to late game, trying to buy deathcap feels terrible, as you already have Boots+3 items. That is 4 item slots taken. Now you have buy 2 ingredients at 2100 gold, and then sit on those parts for 1700 more gold. 1700! This also takes away any possibility of keeping a consumable if you have it, or buying a pink ward to help ward baron/elder in the late game because you have to sit on parts. Sitting on one 1250 gold ingredient and waiting for 2550 to finish an item isnt feasible when other people are getting power spikes.
are 2600 gold.
is 2650 gold.
is 2200 gold.
is 2500 gold. It is literally impossible to buy this item off of 1 ingredient and still win the game, other people can finish entire items before you have the money to combine the parts needed for deathcap.
Deathcap needs a new build path. One that can actually be done and not feel like shit for attempting while you are building it. Something like
+ 750 gold =
(item to be named later) Costs 2000 gold 80 AP Increases AP by 15%.
+
+ 550 gold =
Same as current version.
On to the second item (actually item set) that needs to be looked at IMO.
Why do these items need to be looked at? Because they give the highest amount of income to a support for the lowest effort, and the lowest amount of gameplay interaction with the other team. If you have coin, all you have to do is be in the lane, and you will collect you income. Late game they are guaranteed their income by being near their team when clearing waves or pushing an inhib. By comparison, the
line has to constantly be landing abilities in order to collect their money, and if there is no enemy around and they have stacks, they are losing money.
line has to be able to proc autos on minions, specifically melee and cannon minions, otherwise they lose money. They pretty much cant do this is they are: Losing lane, their adc is a jackass, there is no one with them, or the game goes past 25 minutes and the waves get AoE'd down by their team before they can get off stacks. And in the end, ancient coin beats them all economically. The passives for FQC and FotM arent good enough to warrant being outearned by so much so easily, especially since ancient line actually has a passive now.
It just doesnt seem right for an item that is purchased by champs who want as little lane interaction and as much farming as possible to have an item that then also outearns the other teams support with no effort involved.
and
.