I'm great with dragonborn being dray, have been for a while now.
Half-giants are not goliaths at my table...but I'm not going hate on them for doing it.
Also, from the first episode of the live stream James Ohlen hast to reference something from the book...and it's a decent size. I had assumed it was going to be smaller due to the price, but I remember him mentioning that the books were being sold at cost.