The beauty of Seaholm is that it will add some height variances and material interest to DT Austin.
I've lived in San Antonio most of my life, with 4 1/2 years in Austin and 1 year in Johannesburg, South Africa. What makes San Antonio's DT is the base scale of 6-8 stories in the dense areas of DT. Austin always struck me as artificial just because of the number of vacant lots and 1-2 story buildings between skyscrapers. Now, the infill process will help to change that. Seaholm will add height, yes, but more importantly (I think) it will add some density and diversity. I also think it will offer a fuller, neighborhood feel. (And I don't mean neighborhood like suburb - more like looking down Park Ave in Manhattan and seeing 6-12 stories lining the street...)
Very cool for Austin. And maybe a nice blueprint for San Antonio and the Pearl Brewery site.