I keep going back and forth on this one. There's no denying that it feels like a cross between 609 Main in Houston, and 1144 15th Street in Denver...which itself is basically a knockoff of Eighth Avenue Place in Calgary.
The major distinction here which could make it stand out is the fact that it has a mass that rises on a slope and recedes nearly all the way up, while all of the aforementioned buildings have masses that mostly rise straight up to a crown that then takes on a slope. Even 609 Main, which has some tapered corners still rises straight up on all sides. That being said, I too also feel like the vast void of that crown could easily accommodate a layered crown the recedes similarly (and could be a tribute to) the Frost Tower...so that feels a little like a missed opportunity.
The one thing I think is appropriate, believe it or not, is the height. I've come to realize that Austin is becoming very taken with a gradual rise from the lake in terms of building heights, because a city skyline usually always looks good in such a way. I think the taller proposals going forward will likely be further away from the lake, and 6th & Guadalupe is a great example of that.
Design-wise, I just remain cautiously optimistic. I mean, at least it's not a box