"We are beginning to understand how body plans are put together."
1. Yes, due to the FACT that evolutionists can't even figure out the specific genetic steps that would create novel or more complex traits, it's obvious that you are just 'beginning to understand.'"
Well, no. Evo/devo has given science tools to understand how this works in many cases. HOX genes provided the initial breakthrough. They have been able to understand how genes are turned on and off to control development of segments, limbs, bones, color patterning, or like the article I gave you sensory organs.
So yes, the science is very new and has not provided all of the answers you ask for. However, they have made great progress in just a few years. What is more significant is that homologous control genes like the HOX sequence reinforce evolutionary theory.