Probability says we are likely not going to be a passing team the first year. We have a top 5 RB in the NFL, and who's our franchise QB that can carry the team with their arm? No one. Carr looks good for two plays then looks like Will Levis the next. So if you're hoping to put our offense on his arm, you're going to be disappointed about the results.
Just like Payton leaned on the run game the first half of the season in 06 for his first year, the new coach will likely do the same (for some similar reasons and some different ones). And since we don't have a Drew Brees, the new coach will likely lean on the run game longer.