No, people don't have to agree with me. Look at Gaede's post. He disagrees, but provides reasonable feedback with some detail. He didn't just go for snarky one liners in an attempt to be the likes leader or some nonsense like that.
What, then, was the point of leading your post with a reference to those that are snarks/trolls? Is that the preferred way to become the likes leader?
As for the rest of your post, there are two big keys to this defense being better than expected:
- The offense performing at a top 5 level, controlling the ball, and scoring points.
- Special teams coverage units winning the field position battle.
This defense will be challenged in generating a pass rush without blitzing, and stopping the run. The secondary should be improved over the long haul of the season (I expect both Claiborne and Wilcox to take big steps forward this year), with the first four games being a bit rough without Scandrick, especially in the New Orleans game. There isn't anyone in the front four that an offense has to game plan to stop. Melton had one good season and one pretty good season in Chicago, playing next to a Pro Bowl DE in Julius Peppers. He is coming off of a knee injury, and is not surrounded with any players on the DL that have demonstrated, consistent pressure ability. George Selvie benefited from playing with Hatcher and Ware (even if in a diminished state, he was a threat), and now will face more chip blocks and attention than before. Terrell McClain has washed out with three other teams, and, for a point of reference, Nick Hayden, who everyone wants to ride out of Dallas on a rail, had more tackles last year than Terrell McClain has had in his career. I believe that DeMarcus Lawrence will be a good player and contributor in Dallas, but he will likely not begin to emerge until late in the season. Jeremy Mincey is roughly the equivalent of what Marcellus Wiley was in Dallas in 2004 - someone that you want to replace.
The LB corps has potential, but if the front is getting blown off the ball, it won't matter. Carter is in a make or break year for his career. Durant is a solid, yet unspectacular player. Holloman still has a lot to learn and needs to become more physical. Kyle Wilber is an Al Singleton type who is also solid, unspectacular, yet willing to play different roles. Rolando McClain is a huge wild card - he has the potential to be the most talented player on the defense, but his commitment is a huge question mark. Counting on him is a mistake, IMO.
Will the defense be worse than last year? It very well could. It's not more talented than last year's team, and is already demonstrating issues with injury. That being said, last year's team was so bad defensively, it would be hard to imagine a unit being worse. I think it ends up being a bottom five unit.