So having shorter doms is better?
The only time it's mattered to me is if I wanted to repeat a bodypart in the same week but was too sore to do so. What a lot of people don't understand is that you don't grow while you are in the gym. You tear yourself down there which does cause micro-tears in your muscles and when you heal up with diet and rest....that's when you are apt to get stronger. When I stop getting DOMS for specific bodypart...I switch things up. I do however think you can progress even in muscles you don't necessarily get DOMS in. But I like it.
DOMS has nothing to do with progression. It can be a sensor for progress in the initial stages (that you simply attacked a new direction with a muscle).
I went from 90 pound deadlift to 315 pound in 9 months and didn't get any DOMS except in the beginning - a clear example