I'm sure that the vendor list will likely be held tight for a while. I'd think that the full-list would be rather fluid between now and 2016 completion date, but I'd think that they'll eventually release a few "anchor" vendors.
I'll say now that I have at least seen the released concept art, I like. I like the additional water, it's smart of them, as the tranquility of the water features will likely cause people to unknowingly relax and slow-down a bit, thus causing them to spend more time/money in the area.
As someone who walks under elevated train tracks 5 days a week, I'm up in the air on that part. Even the rusted out ones I see daily have a nice, rugged beauty to them, so I like that they are taking the idea of the reclaimed elevated train "parks" to give the shade to the area. I'm torn because I really want to see the execution on it before I fully comment.
I do like that they are trying to continue the trend of placemaking.
I'm not excited about it being a glorified shopping mall though, but honestly, it is what it is and what it has been for a good chunk of it's time. I've not ventured past the Marketplace in probably 10 years, maybe this will make me do it on our next trip. It likely all depends on what is available.