In terms of the environmental cleanup, that's a nut that we're going to have to eat if we ever want that developed. I'm not sure any developer is going to take contaminated land.
They won't. Especially not in Jacksonville. That's City land that requires a City cleanup.
Also, one thing to consider is that if you parlay predev/preparation costs to developers and require them to build the riverwalk, pay for remediation and cleanup, etc etc, they'll never be able to pencil their developments.
To get office in downtown Jax, WITH free land and average to below average construction costs, and attractive financing which won't happen in a market like Jax, they'll need to charge $25-27+psf rents, which is already higher than anything in town.
Also note that the Strand sold to Crescent Heights for $181k/door, a record for Jax with a huge gap to 2nd place, and a price based on in-place rents and of course market risks (likely a higher cap rate). Even at a lower cap rate (and I know the occupancy was very high, and Crescent received very favorable financing), I can piece together the math in my head that Jax rents for luxe high rise apartments aren't truly where they need to be for new construction these days. So that's an obstacle.
Condos - I think we all know there. Jax is not a condo market. Certainly not a luxe/waterfront condo market. I believe many of the Jax residents who have money and hometown pride already bought condos in the Peninsula. That really saved that building, but the market's certainly not deep beyond that.
Hotels? News article after news article on local hotel defaults, management issues, ownership changes after poor performance, articles putting Jax in last place for hotel markets, etc etc. And we still haven't seen movement on any other proposals. This will be the last thing to go up if I had to guess. Jax downtown hotel market is hardly deep at all and everything is at a low basis since everything has already been foreclosed on, and yet still new owners can't get the rates they need or the occupancy they need. That's a serious issue caused by other fundamental issues that plague Jax/downtown - a sign that there's not a lot of business, no tourism, not enough things going on, etc.
So at the end of the day, I think Khan wants to ensure that he CAN sell the land to developers - I actually think exactly as I said before, Khan wants to give land away as his version of an equity stake/contribution so that there's no basis in the land and the City has already prepped the whole site for development. THAT might be the only way any of this gets done.