Guys, once again you have it the wrong way around. I think you all need to quit your subscription to Cock Measuring Weekly... I mean your membership of Skyscrapercity.
It's not "If YOU build it they will come." It's "When they come THEY will build it."
Governments should not be in the business of building skyscrappers. Everywhere in the World where the main motivation behind such a project comes from a local government's desire just to have one, it seems to all go wrong. Look at our past, State Bank Building (now Westpac), Myer Centre/REMM.
When public monies are involved developers line up salivating because they know that RoI is not the be all and end all. They know that if budgets over run, the govt will foot the bills.
Where motivation comes from wanting it, as opposed to the market needing it, tenants are often hard to find. Something can be said for getting govt depts to move into the CBD, but not into what will become another white elephant.
The way any city gets skyscrapers is where the private sector sees an opportunity to get a return on their investment. The way to get that kind of environment is to have industry. The way to get industry is again not for the govt to go fishing (Multi function polis any one?). It's just got to be left to happen naturally. I'm not saying that the govt doesn't have a role in facilitating this, but they can't make industry out of thin air.
Opportunities must be identified and investors must find those opportunities. History has taught us that it just doesn't reliably happen any other way.
Exit on the right in the direction of travel.