Rowand had a PHENOMENAL season for sure... But to expect him to step it up is being overly optimistic. In his pro career, other than 04, he had one other season over .300, when he was 21. Speaking of his age, he will be 28 in 05.
He is a gritty player who goes all out. Therefore, he is more of an injury risk. My guess is that he probably will hit somewhere around 15-20 HR with 15-20 SB. The batting average should be somewhere around .275-.290 based on his career numbers. Should be a good hitter for a few years but I don't think he will get much better.
"Think of how stupid the average person is, and realize half of them are stupider than that." ~George Carlin