Looks like they're talking about the rez being 3/4 the size of Taylor Park, not Blue Mesa- somewhat of a relief. But they're still talking about pumping water uphill (similar to ALP), which means the Cost / Benefit will likely be negative. Most dam projects integrate a hydro-power component to generate revenues, plus they factor in recreation, water costs, etc. - then they can decide if the project is net-positive or not.
This project sounds like it would take decades to research, permit, fund and implement. From a boater's perspective, I don't necessarily like dams and whatever they take from the Gunnison below Almont in springtime doesn't go through all the runs below. However, they're not talking about flooding a runnable canyon (that I know of) and there's something satisfying about denying water to the Bellagio's fountains.
I know it's more complicated than that, of course- water conservation issues such as slaking the thirst of the Front Strange are going to get to be a hotter and hotter topic in the years to come. No reason to start choosing sides just yet, but I imagine we'll all keep an eye on this one.....