want to make something clear, I don't think it has to be a tomestone grind or a RNG fest I think it should be a mixture of both.
In wotlk and cataclysm badge of justice gear (uncapped tomestones) were of the same ilvl range, the reason beign that the badges were used to balance the RNG of the dungeon looting (it same the same way for the capped badges, however you could get those only from raids).
What I think would be beneficial to the game is a system that works in tandem with what we have right now.