Two stations... KMJJ and KBTT serve the needs of the Hip-Hop community and it's more than enough for a market that size. And, even KDKS & K94.5 play their fair share of it. Shreveport is actually one of the better radio markets, because most of the needs are met. You have good Urban/Urban AC-Blues, Country, AC/Hot AC, Oldies, Rock/Classic Rock. The only thing that's really missing is Smooth Jazz and the market really would not support it.
If I were going to start a new station, or flip a struggling one, I'd go with Urban Oldies, maybe stick a Gospel Block in the Midday, and then put some Smooth Jazz on Saturday or Sunday.
But the market definitely does NOT need anymore Hip-Hop.