I don't think the OP understands what the Rams play. The Rams play a 3-4 hybrid scheme. That is a 3-4 played like a 4-3, i.e. a one gap scheme. It uses at least one OLB as a JACK who plays as a second DE. By design, it's supposed to be played aggressively, in an attacking style with the DL penetrating to make plays behind the LOS. So in that regard, it's no different than an aggressively played 4-3.
The problem is, Morris doesn't play that way. He will mix his DL alignments. The hybrid 3-4 is designed to play on the shoulders of the OL. The NT is played as a 1T but Morris often plays his NT (Gaines) as a 0T which means he's head to head with the center. This means he's the only one on the DL playing 2 gaps. A normal 3-4 is a two gap scheme for the DL and is predicated upon freeing up the LBs to make the tackles. But with everyone else playing 1 gap it really fucks up the ILB assignments. It's why too many times the middle of the DL is soft against the run. With only the NT playing two gaps it means at least one of the ILBs needs to back him up which all too often doesn't happen.
One gap DL tend to be lighter, emphasizing quickness and speed as their assignment is to penetrate and disrupt. Two gap DL tend to be bigger and more stout as their assignment is to eat up blockers to allow the 3 LBs to make the play. This is why I keep saying Morris doesn't play his personnel to their strengths. This front 7 was designed by their personnel to play a one gap scheme. But Morris keeps playing it like it's a two gap scheme. WTF??
One gap penetration is what most teams have migrated to. That is the type of personnel the Rams have on defense. You can tell what kind of defense a team plays simply by 1. how they align along the LOS and 2. the type of personnel they have along the DL. Go ahead and look and you will see most teams are one gapping. Morris has a defensive unit designed to attack and he plays them soft. WTF is wrong with him?