Pace bowling against the AI in test matches needs vast improvement. Edges need increasing a lot ( especially with the new ball), aerial shots need decreasing (at the moment about 90% of boundaries are from an aerial shot), the ridiculous cut shot played to full balls needs to be removed, batsmen should play themselves in, rather than hitting out from the first ball they face, and there should be a noticeable difference between batsman and tailenders.
The way the game stands as it is bowling-wise it isn't too enjoyable, it just seems a case of bowling until the AI decides to give you a wicket.
Spin bowling on the other hand plays more realistically from my experience although again edges need a slight increase. Spin bowling feels like playing test cricket while pace bowling feels like 20/20 played over 5 days!