For me , the worst 3 things about the game are :
*1* - the general issue about the engine being awful. Gx look superficially good on PC version when run at 1600*1200, but you soon realise that it's a complete slave to the animation, not a patch on the nfl games.
You are clear one second and the next second a defender 5 yards away has lept into you like an exocet,
You kick over the full backs head only to see the ball suddenly get pulled in to him
You draw the last defender, ready to put the winger away, time you pass to perfection, only to find that it's too late, the tackle animation has started.
The list is endless.
*2* - forward play sucks. Well, there is none really, just frustrating turnovers and no ruck/maul play other than adding men to the ruck.
*3* - set plays. Don't work, especially when playing against another person rather than AI. It's easy to see where the ball is going and just sprint up to the outside half/centre to knock the ball carrier down behind the gain line.
I enjoyed this greatly the first 3 nights I had it, but the above issues mean that I have lost my enthusiasm for it. It is better than 2005, in which the above issues were even worse, but they need to be completely overhauled, not tweaked.