Just curious... why would you "NEVER" use D&B? If anything this is the only true way to retain original texture. You're not supposed to even the skin out completely with D&B but make the blemishes blend in better. If you don't go all out you get smoothe original skin.
Once you start cloning and healing you're actually taking one area, making a copy of it and putting it somewhere else, in most cases due to the lighting you'll be dumping the texture close to where you got it from thus in the risk of creating patterns if you don't do additional changes afterwards.
Check out www.mortenlaursen.com
, he earned himself the nickname "mr. skin" here in Europe.
I used to work for him as assistent and retoucher, and I guarantee that he does not use clone & heal to do anything more than takes away beauty marks or undodgeable marks. The skin is cleaned completely with D&B... I got sore fingers to prove it hehe x)
If you're bothered by redness in facial skin then use selective color and take out 10 magenta from red, add 5 cyan to red, then add 7-10 meganta to yellow. (adjust to fit of course).
If it's only partial areas that suffer, then of course add a mask and brush it in manually.
If your clients complain about the time spent, you say that art takes time and costs money