I think the George in Clearfork has, so far, done the best job of exterior design within this category in Fort Worth.
I generally like the rhythm and clean color palette, which, IMO, avoids using too many different materials (common mistake).
Someone pointed out it looks too massive (think they meant width). I think its okay. Assuming maintained responsibly, it should age well and fit into a context of 4-8 story buildings in a future, more complete Clear Fork street grid.
Another aspect I like is that its facades provide some modest variation in depth at windows/balconies, and those variations (slight step backs) seem to be located in logical, eye-pleasing locations. I'm guessing these rhythms follow some Palladian ratios that I can't explain but my make my eyes happy.
The David-Shwarz designed buildings Downtown tend to respect and achieve these eye-pleasing Palladian ratios, as many of our treasured old Art Deco buildings did. Im not including any of the DMS buildings since they are either pre 2010 or are not primarily multifamily.
I think window size and ratio of windows to solid walls make a big difference too. There is something about these that seems to matter greatly. Most developers seem to go with smaller, likely standard-sized windows (assume cost issue) and limited amounts of larger windows. Havent figured out what those ratios are that seem to be most pleasing to the eye. I dont think its as simple as maxing out glass to result in good design. There are buildings in other cities like Austin that go heavy on glass and yet still something isnt right.