I personally would love to see the shipyards finally developed. However that seems unlikely given the scope of the project. It seems more likely that several smaller projects will be completed and then if they're successful we could see something like this. I live in Riverside and it would be great if downtown had as much going on as here or Avondale.
There are 600 residential units and some commercial space along Riverside Ave in Brooklyn that are nearing completion. They are apparently selling/renting well because they are already planning on building more. All of this will bring a lot of people on the doorstep of downtown and then maybe we'll have something going on after business hours. There are plans to develop the Laura St Trio also but this is probably the fifth plan in as many years, so we'll see.
I wouldn't base my current investments on a project that may or may not be completed years from now. Jacksonville will continue to grow either way and that's good enough for me. If you were interested in investing in downtown it would be a different story but right now that's going to be high risk.
I wouldn't consider buying any residential units they would be selling unless I was going to be living in it. You'd be paying full retail and have no cash flow. It would be a straight appreciation play, not my thing personally.
I don't think the project brings much if any risk for small investors. And as far as the city is concerned if it was tried and failed it might set back the redevelopment of downtown, but what else is new?