MA... first of all we are speaking about a human process.... by definition there is "politics" involved. Whether to appease or preferential or whatever one can come up with.

However having said that for the most part the selection process does work with the best that CAME to tryouts.. This subject is not new and there is a thread going back 2 years on the same topic

Club affiliation??? I was involved with ODP for 5 years and in my opinion club affiliation only helped in that the player selected was better prepared. So yes you would expect that players from club A who have a history of winning would most likely have the better players.

In my experience it has been diversified with those that CAME out to tryouts

I keep capitalizing the word CAME because I know for a fact the best players do not all try-out.