You could have the best bench in history but if the coach doesn't know how to manage rotations, or run practices so the second unit can learn to play together (particularly with so many new faces) and magnify each individual's strengths, they are just holding the pine down.
At what point does Griff pull Lue aside and ask "Dude bro, what the fuck is up with your minutes management and rotations? I didn't go out and sign or trade for guys to sit on the bench with a DNP-Coach's Decision next to their name every night while LeBron plays 42 minutes a game. Unfuck that shit, broseph."