I can honestly say I've witnessed 2,3 and 4.
The reason why I couldn't say #1 as well.....was based on the final pre-season numbers for the cpu qb's.....
Here's the combined numbers for the starting qb's during pre-season
34-59 for 287 yards 3td's and 3int's...1 by Campbell,Mcnabb and Testaverde.
Also ....here's the combined #'s for the back-ups
23-39 for 194 yards....2td's and 2pics....the 2 pic's were all David Carr's during the last game in pre-season against Carolina.
I'm still going to explore the possibility of lowering the knockdown slider,but I don't think It's going much lower than default (50). As I still want to make sure my defense at least makes an attempt on the ball.
I do like your list of 4 things though.....now all that needs to be done is find out WHICH one it is,as well as find the "happy medium" lol