The KWCA has proposed a dual tournament several times- and is currently working on one to propose again. KSHSAA has seemed very reluctant to change in almost any regard let alone Dual State Wrestling, but we are working.
To address the filling a line-up issue, I agree that we as Coaches should, whenever reasonable, to fill our line-ups. However sometimes things aren't what they seem. When I was a freshman getting thrown to the wolves at 135 I had already wrestled for 5 seasons (this was a late start compared to most of my peers). At my current high school the majority of my team has their 1st wrestling experience when they come out in High School. I generally don't throw out 1st year wrestlers to varsity level tournaments because they will get eaten alive, not be able to defend themselves, and not provide any semblance of a fight to the older, experienced wrestlers. Their time is better spent at the JV meet learning how to wrestle instead of taking a beating. If I can get them back for another year or 2, we may be able to make something out of them- but if they are getting pummeled just because they are varsity by default they most likely won't come back. At a single dual, I may fill a hole or 2 with a kid that can fight a little, but sometimes we have to way what is best for the long term development of the kid and team, as opposed to what the short term benefit of filling a spot in the line-up that will end up being a quick 6 anyway.
Just a quick summary of my thought process when I look at filling the line-up. BTW, barring any injuries/illness we'll have a full line-up of at our league and regional tournaments.