I don't think so. Every single one of those champions will still be very much viable.
They were viable before FF. Feral Flare just made them beyond overpowered (and frustrating to play with) to the point they became THE junglers or you lose. Not how you balance a game.
They were viable before FF. Feral Flare just made them beyond overpowered (and frustrating to play with) to the point they became THE junglers or you lose. Not how you balance a game.