New Assassin Item: I wonder if RIot keeps a whiteboard checklist of their Champions?

First off I know Nightfall is in LoL lore as Morde's mace. But I wrote a post about having an AP Juggernaut item called Nightfall a few months back and I find it funny that it pops up as a part of a new item. Not saying they took the idea from their player base, but when they do they should give some credit.

"New Assassin Dagger Recipe: Serrated Dirk + B.F. Sword + ??? gold (over 3000 gold total, still fine tuning) +75 Attack Damage +5% Movement Speed UNIQUE Passive: +10 Armor Penetration UNIQUE Passive: Basic attacks on an enemy champion apply Nightfall (60 second cooldown). Nightfall: After 2 seconds, deal 25% of the target’s missing health as physical damage. If the target dies before Nightfall ends, the cooldown is refunded. The main goal here is provide an assassin item that those champions will actually care about, ensuring they have the right hooks in the item system to feel good and scale appropriately with as few non-assassin abuse cases as possible. Secondary goals are providing a multiplier that is more powerful if you aren’t snowballed (a super fed Talon will 100-0 his primary target before Nightfall triggers, so he’ll be using the trigger on a lower priority opponent often without the support of his full combo). Additionally, this provides provides a fallback pattern where a failing assassin can still be useful to their team, e.g. by cooperatively killing targets they otherwise might ignore, or using this item as a multiplier on teammate damage. "

I noticed the squad hasn't really talked about this item, but I see this being an item that isn't 100% geared towards assassins, but more towards champions that exploit the passive based on their wait and see playstyle. In its current form this is probably going to be abused more than RIot thinks from champions they seem to have not designed it for as he waits for his teammate to lock someone down and see how fast he can blow them up.

Of course, this may be the intended case that they just didn't focus on as this synergizes well with his Ult changes that gives his ghost +40% of his total AD, but changes the initial damage to 25% and 75% over ten seconds.