I'll answer some of these as best as I can...
As to familiarity with construction sites (******* nephew and his even worse father):
They are pretty ambitionless, and while they would notice places that would be ideal to get rid of stuff (or a beloved relative) in a large scale construction area-- DC and CC work, or have worked in a very small scale construction contractor company (WC used to work there as well) installing/removing drop ceilings.
It's not the same style of construction as one might think.
As for search efforts"
Yes, people are out searching daily.
Some days are more rigorous, and some days are very quiet. It would seem that we would have run out of places to look, but the reality is: I don't know anyone who thinks like a killer, so we are really searching without a starting point.
If there were an obvious place to look, detectives would have already located him.
As for LC and Will's loved ones:
Everyone is still hanging in there, hopeful for some answers. It is a daily chore. They are wonderful people. They deserve justice in the name of their beloved.
As for arrests:
It is my unprofessional, very angry, uneducated opinion that DC and CC will be hauled in eventually for murder.
It's just a matter of time.
Did I miss anything?