The only respect that the CT might make you a better pilot is being forced to fly a plane that is not competitive in the MA, and you learn something from it. If you can learn to kill in '42-'43 planes from practicing in the CT, you will have a better understanding of getting the most out of what you are in. Lots of people who are several steps above average in the MA do fly the early planes, so no, you dont have to fly in the CT to accomplish the same thing, but its somewhat easier to learn that if there is no chance of running into a Temp in your Hurricane MkI.
I cringe every time I see one of the CT sandbox bullies abusing someone who is just trying the place out. Personally, I think certain folks want the CT to themselves and work to keep new people out, or leave as quickly as possible.
I love it when someone like ManeTMP or Leviathan, or Shane, or Urchin comes in there and smacks me around because I always learn something from it. I had more fun last night when the MA was down and there were 90 in the CT than I have in a long time.
I heard a lot of people, some who had never been in the CT ever before, say things to the effect "hey, this is kinda fun". Heck even ManeTMP said "the CT is pretty fun when its like this". Unfortunately, there were nearly as many that said they thought it blew chunks.