"hence the explosion of vertical turds in river north"
Classic quote Steely.
I am interested to see how Aqua and the Architectonica (LSE) tower turn out. They will likely have painted concrete, no? The Architectonica design is derivative of Chad Oppenheimer's ICE/ELEMENT designs from Miami, which I think have white painted concrete, but look fantastic compared to some of the junk in River North. We need some architecture like that here. The post-tensioned slabs allow for long thin spans with tons of glass to balance out the sleek concrete elements.
Contemporaine looks great with its raw concrete, but that could be hard to pull off and apply to lots of different designs IMO.
Hopefully, if well executed, Aqua and the LSE towers may start to set the bar for how concrete towers are finished in this city in the future. While I think stone looks beautiful as a cladding, an exposed concrete tower can look equally as stunning if done correctly.
Now that I think about it, there are some south loop buildings that are turning out alright (Vetro? etc.) that must have some painted elements... although they are very glassy, and not really comparable to Lincoln Park 2520 design-wise.