Although I prefer DeCastro, I can't see why picking a CB would be condemned since it is one of our top needs.
If Dallas has a corner rated higher than DeCastro, then I want Dallas to take the corner. (I don't think any that will be available at that time will be higher-rated, but ... )
And this goes for it Dallas picks neither a corner or a guard. We need to strengthen this roster with the best picks we can make, period. Need, of course, has to be factored in,
but we're lucky that we have a lot of needs.