So, Reav3 mentioned the possibility of a new "Assassin Objective". Here's my take.

The idea is an objective that Assassins have in inherent advantage in securing.

So, imma throw an idea of mine in there.

A new buff, but not one you get from jungle creeps or anything.

At 15 minutes in, an altar rises in the fountain of each team.

Altars start with one "power charge", and gain another one every 5 minutes; they can store up to 3 power charges.

Champions can click the altar to channel, absorbing one "power charge" and empowering them for 2.5 minutes.

If an "Empowered" ally gets killed by the enemy, the buff will be lost from your ally, and the enemy team's "altar" gains one "power charge".

If the altar was full, the killer becomes Empowered after a delay.

If the killer was also empowered, their empowerment is refreshed.

The job of an Assassin, in regards to this, is to keep your eyes open for which enemy is Empowered, and kill them before their buff expires, so that you can secure more of those precious power charges for your team.

It would also open up some interesting dynamics; "Ok, the enemy team just empowered 3 of their teammates, and Baron is up, but we only have one power charge in the altar. How should we play this out?"