im just lookind for some upgrade recommendation for a stock 09 specialized tricross single speed
what aspects of the bike are you unhappy with?
those are the areas you should look into improving. Making changes just for the sake of bench-racing or throwing money away is quizzical at best.
that being said, if you race, get a good cheap set of tubie wheels and tires and shod them with something like a fango
I don't know how different it is from the 08, but first thing I did was replace the brakes. Those Tekro are Terrible. Next I installed barrel adjusters to the cable housing. Then I replaced the wheel set. Those Alex rims are awful and would go out of true after every race. I replaced them with a pair of mavics and put some skinny ritchey speedmax tires on. I then replaced the seat with a fizik arionne and am in the process of replacing the seatpost with a thomson elite. Finally I put new handlebar tape with new bar plugs (the specilized ones kept coming out) and threw on some extra carbon cranks.
I now have a savage super light single speed cross bike. I would be mad about having to put all that money into a practically new bike but I got it super cheap.