Ancient Coin Speed Nerf
So first of all, I am willing to bet that 99% of people won't care at all about this but either way, I don't think it makes sense. What I am referring to is the fact that in the latest patch (5.22, glory to all marksman) the Ancient Coin -> Talisman of Ascension had its move speed bonus removed. Personally I feel that this makes the item less valuable than the other gold income items that are commonly taken by supports. Lets look at Relic Shield and Spellthief's Edge.
Spellthief's Edge: +5 Ability Power +2 Gold per 10 seconds +25% Base Mana Regen UNIQUE Passive - Tribute
Relic Shield: +75 Health +2 Gold per 10 seconds UNIQUE Passive - Spoils of War
Ancient Coin: +25% Base Mana Regen UNIQUE Passive - Favor
So first let's look at the fact that Ancient Coin does not have a Gold per 10 stat. This is OK, because its Favor passive is definitely a more efficient gold income generator than Tribute or Spoils of War. So we'll say that Favor alone makes Ancient Coin even with Relic Shield and Spellthief's passives + the gold per 10 on each of them. Spellthief's Edge also has the +25% Base Mana Regen so Ancient Coin and Spellthief's Edge are even in that regard as well (Relic Shield lacks a bit here). Now however, there is a problem. Spellthief's Edge and Relic Shield both offer some type of stat boost. Spellthief's Edge provides the +5 Ability Power and Relic Shield grants the player +75 Health. These are both very small boosts, but Ancient Coin offers absolutely no extra stat boosts. For this reason, I feel that the previous small boost to movement speed was fair. It was a small stat boost that made the Ancient Coin offer something more than just gold income.