well, I agree that adding a drip is cool, but I still think it is overkill in dwc...I have done all that you are talking about...built all the systems...and Imho, it is believed that roots are drawn out when waterlevel is lower, (what you said)
Now with that said, If you drip on them constantly. they don't have to find the nutrients, and they don't grow as strong a root structure. I am not saying that your system is wrong, because I use the same thing in 2 different designs...one with a submersible, and the other with a 600gph centrifugal pump...

Now, I think we will all get along alot better if you tone it down a little when criticizing someone, and I won't cuss you out...Deal?