Assembly? The Seaport?
The Seaport was essentially just vacant surface parking lots, no? With extremely consolidated ownership (Fallon and McCourt, yes?). And just one item got built that could plausibly be described as touristy--the ICA (someone correct me if I'm mistaken). In that vein, do tourists really venture to Assembly? Yes, it's rather high-end malling, but--that's available in plenty of other areas in the central core, with lots more hotels.
Wynn had to spend a colossal sum on environmental remediation--and the net result was a massive casino that is nevertheless shoehorned into an area that is still overwhelmingly gritty/heavy industrial in use/atmosphere--both abutting, and within the larger lower Mystic context. Of course it made sense for him because he could anticipate a good ROI given the casino being approved... but how many more casinos are going to be approved in this neighborhood? So again, I'm extremely skeptical.