Public transit is at its most useful and effective connecting dense, walkable locations. That's why it's so great in the world's best cities. The problem is a metro like DFW doesn't have the density to have said good public transit. If anything, many American cities have more bus lines and light rail lines than they would if you asked an European transit authority to decide where to build.

Density first, very good transit second. Or at the very least, wait for zoning and incentive decisions that will bring infill to those locations in less than 5 years. But we sure aren't doing that.