Lalonde had an awful defensive system that didn't allow for players to have any sort of agency or creativity outside of this person needs to be here and when you get the puck immediately flip it out of the zone. You could really see it with Seider, any sort of creative plays he used to do with the puck dried up the last two seasons. I also feel that his defensive system seemed to rely more on collapsing into your own zone instead of trying to stop flow through the neutral zone, which I hate. Then on top of that, I feel like the last season and a half he was coaching scared to lose his job and stifled the offense even further. They weren't chasing after dumping and they basically had no way to generate scoring chances. You could tell that the system absolutely crushed most of the players, they didn't seem to be interested in doing more than going through the motions because the system was so rigid and based around not giving up a goal.
Todd, while he runs an overall defensive oriented system with players collapsing more into a trap type scenario when the opposition is breaking out, it seems like emphasis is placed on hounding the puck carrier in the neutral zone. On top of that the players seem to be given the chance to actually make plays with the puck, passes or carrying, instead of instantly flipping it out. It seems like guys are jumping up on offense more and possessing more as well. Honestly in the end it all boils down to his "just play ****ing hockey" rant. Lalonde basically coached these guys into being robots in his system which wasn't flexible at all. Todd wants them to rely less on falling back to the system, but work within that system using your instincts and skills to make plays.
Plus Lalonde was an absolute moron when it came to deploying people, especially young players. Johansson is playing 20+ minutes a night and he would barely leave the press box under Uncle Fester. Kasper was being shoehorned into a bottom six checking role. The man put Motte on the top line. In retrospect it is kinda crazy what he did to this team, no wonder all the signings looked awful!