While I agree that the 2012 defense won't be the saltiest one KF has put out yet, there is no way it will be as bad as the 2000 version. It is outrageous to even suggest (even if it's simply to provide cover for GD's rear end) this.
Just look at the personnel (talent/size/speed) and it's obvious. The secondary in 2000 featured starters like Tim Dodge, Shane Hall, Ryan Hansen, Mikkel Brown. LBs were Barr, Steen, Woods but in 2000 only Woods was any good. On the D-line we had a big body in Pickens at DT and the So version of Kampman at DE (?). Not sure who else.
In 2012 we could play any combination of 4 sub-200lb guys in the secondary and be 5 times better. At LB, we are deep and decent with Kirksey, Morris, Hitchens, Morris, Dibona...all quality players. On the DL, we are likely going to line-up Carl Davis (6'5"300lb), and Cooper (6'2"280lb) at DT; McMinn (6'7"250lb), and Alvis (270lb) at DE. Backups will include Spears, Trinca-pasat, Hardy, Tsiponades. A couple of the back-ups (Spears and Trinca) have been mentioned in the past to be excellent in practice.
We should be solid (let's say 4-6th best in B10) on D in 2012. That said I am all for sand-bagging for the next 6 months if it means opponents will come in overconfident and expecting to score like they are playing against Fran's team.