Brooklyn in Jax, has been a commercial area. Not really residential, sure there are some shacks and some houses located North of Park Street, along Myrtle, but the area around Forest and I95 and areas around those are Ash sites, places you don't want to disturb the land, lots of nasty things in the soil. Its been a blue collar area of town, and not much wealth. You can use your imagination and take the homes you see there now, and place them in LaVilla and get an idea of what that neighborhood used to look like, before Mayor Austin took a flamethrowner to the neighborhood.
As far as most of the warehouses in use along Park Street, I know of Alsco and Britton's as the two most active. Both on the north side of Park. The warehouses and old DCF building on the south side of the street, more or less could come down, sure would be nice to incorportate a cool design with them, but these are not storefronts like you see in 5-points. In fact, Sherwin Williams has been trying to sell their Park Street store for a while now, used mostly by commercial vendors.
It will be interesting to see when the drug-rehab clinic of River Region is moved out of the area and where. Its neat to see drug addicts in the area, rubbing elbows with the swanky crowds of Unity Plaza, but as "progress" moves to RR, you wonder how long they last on that corner. Maybe downtown may be getting a new client?