I think our secondary is solid enough and TDV hasn't shown any elite passing abilities. Hopefully we can stack the box against Saquon and spy TDV. I'm not sure he's played against a defense as good as ours yet besides Dallas who shut him down. I'm going into this optimistic and maybe that's just because I live in NJ and I'm already tired of hearing about this kid.
The defensive line is porous and slow outside of two players (90 & 96). Teams have been attacking with the run as Carolina shoved it down their throats. The LBs are aged or making tackles five+ yards down the field.
DA is slow to make changes as evident by the multitude of times mobile QBs have gashed the Saints defense without a spy ever being put on the QB. (Another sign of DA's hubris and rigidness.)
I like everything you said but I don't think it'll be that easy particularly when the Giants bootleg their QB out and it's wide open spaces in front of the QB.
I too am optimistic but I think the legend of TDV will likely grow.