Yep. Keep in mind I know little about this stuff other than what I’ve been watching over the last 50 years. I don’t the lingo or what means what when you really get into it, or how to understand assignments etc…
I can understand the difference between traditional 43 and 34, and the difference, but this seems like it’s neither, or some sort of combo. All fine by me. Feeling ok about the defense and its younger guys.
I don't know if it's really a combo. I think it's more like Wade Phillips' 3-4 ... when we use those sets.
The traditional 3-4 seeks to have three big men who try to tie up blockers. Against 4-3 fronts, you've got three interior blockers blocking two defensive tackles, that generally allows one of the interior blockers to peel off a block and try to get to the second level (in the run game) to block a linebacker. A traditional 3-4 essentially tries to hold up all three of those interior guys while the tackles have to deal with the OLBs, but you have one less regular LB to make a play. That's essentially the two-gap system, where each DL is responsible for covering two gaps instead of just the gap in front of them so the LBs behind them can be free to run and make plays (only have to take on tight ends and backs). That means the DL doesn't attack/penetrate because it has to make sure it is covering those gaps.
Phillips preferred for his DL to attack a gap and either force the offense to use multiple blockers to stop the penetration or the DL gets into the backfield to make the play. He used a one-gap system like is mostly played in the 4-3. The negative of doing that is if the offense is able to outsmart the penetration, maybe let one player charge upfield when the play is going to the other side, it can free up a blocker to go get a linebacker and possibly break a big play.
Parker says his 3-4 sets use gap-and-a-half. I don't know if that is the same as Phillips or a little bit different. I know Philly liked to put the OLBs out wide and make the offense have to extend itself to block them, so maybe that's what he means.
Despite that, we'll mostly be in nickel fronts because this is a passing league, so we'll mainly have four linemen on the field, a couple of true linebackers and five defensive backs. I do like the possibility that we could use some fronts that start out looking like a 4-3 but transition to a 3-4, but I don't know how that will work out personnelwise. If whoever starts out at LB and moves up to the line can't play LB well or isn't much of a pass rusher, then that would tip our hand on what we're going to do when he's out there. Offenses would be like, "Oh, they're lined up in a 4-3, but so-and-so obviously is a pass rusher, so we know he's going to rush. They're not fooling anybody."