Yeah, I think many of us believe the current usage is unsustainable, but they're winning. Winning some tight, low-scoring bullpen games, too. So I'm not sure there is evidence of "a chaotic lack of direction." Perhaps even though the roles change game to game, there has been a plan for each game, and that the players know what to expect.
To alleviate the IP pressure, I would simply prefer to have more guys that can go 2 or 3 innings. Call them piggy-back, long relief, low leverage, whatever. If they're getting outs they are valuable