A good owner's association or manufacturer's discussion group will have information regarding their boat's design and workmanship issues. They will also list known corrections and fixes for them... When I acquired my 77 C27 in 1999, Catalina customer service sent me a packet which included such a list. It was also available on the owner's site. Many of the flaws and problems I wouldn't have known about with this package. Fortunately, one of the previous owner's of my boat padi attention and made most of the recommended upgrades and retrofits. Lucky me.
There is no perfect boat. Rather than whine and complain about some design flaw in your boat, which is a waste of time, why not discuss adaptations, retrofits, or fixes you may have discovered. In many cases, the factory is already aware of the issue and has made changes and maybe even created retrofit solution.