This is a very valid point and concern. I know some GMs like the former Brampton GM, tfong, tried to break the cycle of SUPER tank and then SUPER competitive, but because not everyone does/did this... it becomes the same ol' same ol'. Competing teams have little to no room for new players, such as yourself, and the only ones with rooms have no one else... makes it a pretty poor environment to walk into.
I hope we can fix this in the future