Give Lethality Items the Old Ghostblade Treatment
For anyone that may not know, Ghostblade's active used to have a shorter duration for ranged champions than it did for melee champions. Because Riot has a hardon for not making items melee only, instead they should at least make the actives/passives or maybe even the stats less effective on ranged champions.
That way ranged champions can still buy their beloved lethality items, but don't completely break them so melee champions can keep using them without having to worry about them getting gutted because of the ranged champions abusing the items.