I'm Worried That The New Assassin Item Will Turn Out to Be AD Deathfire Grasp 2.0

Quote from Riot's post concerning the removal of DFG:

First, DFG tends to make burst patterns even more bursty. The item effectively adds another nuke spell on top of kits that are already designed to have strong up-front damage and aggravates the "whoa, I got one shot out of nowhere" frustration of playing against certain champions. A good example is LeBlanc; DFG adds reliability to her assassination patterns and ends up removing counterplay (she gets to rely on her Q, E, and DFG spells for damage, and can use dashes to reposition or escape instead of making more risky plays).

The second reason is strongly tied to the first; removing this item gives us room to buff champion kits that would otherwise be overpowered if they could use DFG. The most obvious example is Ahri; more 'magey' elements of the character, like her sustained damage or kiting, end up getting washed out because she has so much power to blow up charmed targets with a DFG burst. This ends up forcing us to balance Ahri around her assassin playstyle because there's always the "I can buy DFG" route to consider; removing the item means we can buff her in more interesting ways while still keeping some of her burst because she can't just pick up a DFG and double down on a single playstyle.

I can't predict those things for sure but I feel like the same thing is going to apply to the upcoming assassin item and will cause a balancing dilemma around Rengar, Kha and pretty much every other AD assassin.