Hey there Liguan,
I am sorry your experience with the new Shipyard update has not been smooth. From what I read it sounds like most of your frustration comes in people bringing Veteran or T4 ships into recruit fleet matches? Tell me if I am off base, I want to understand.
If this is the case, the T4 in a recruit match is a result of a few different aspects, one of those being population. We are looking at what solutions we can take, but as it is now if people spend a significant time in queue they will just get put in the next available match. This situation should resolve itself as the beta ramps up and the numbers increase.
Again if I am off base and missing your frustration points please let me know!