I said Rom but meant Nog. Two childhood friends, but Nog's career was more TV series friendly than Jake's! I agree, Nog becoming Nagus was too ridiculous!
I don't think it was a racial thing with Jake. They showed fantastic relationship between Ben and Jake. Cassidy joined the mix. And Worf was another black guy. My guess is that they wanted to avoid the Wesley cliché of, "there's nothing more that I want to do than join Starfleet because of my Dad!" Of course, Wesley didn't join at the end. But they might have wanted to avoid it with Jake. Unfortunately, that didn't give him much to do, particularly when the Dominion War was front and center.