To be great you have to play against great competition. If our drafted players are as "nasty" on the field as they were in college, competition could make this team great.
Flowers makes our Oline and Dline better just by addition. Our oline was soft last year and it showed up on both sides of the ball.
I could go down the line. great WR + great DB = great competition. Better running game = better tackling D.
Obviously it doesn't always work out, but To me our team got way better just by adding some quality players. That in turn "should" make others better.