We swear by our Pro Q's. They cook really well one you learn how to dial them in. All of the above things you have mentioned are true, we have just learned to adapt to the very few flaws that they have.
Our doors still leak minimally, but the stackers have tightened up the longer we have cooked on them. No issues there any longer.
We havent cooked on our squeaky clean WSM in over a year, there's really no need.