I basically agree that you need players with defined positions.. at least as far as your starting 5 and your backup center. The 5 because, they are your starters, and the center because you need to have a defensive anchor and shot blocker on the floor to keep things in check at all times.
The rest of the team can be as versatile and undefined as they want to be. Austin Daye doesn't suck because he doesn't have a defined position... he sucks because he can't shoot the ball. Charlie V sucks because he can't play defense not because of his lack of a clear position. Jerebko I'll give you, I think they need to figure out what his natural position is so he can focus on practicing the skills he needs for his role.
Overall though, Kevin Love is a PF who can shoot 3s, but can also rebound he can stretch the floor and be effective. I know there are a few PFs who can do this, but my point is that we don't need guys to fit molds into certain positions to be successful. The guys coming off of our bench have to do certain things... some are 3 point shooters, others are defensive forces, or if you need to get to the line you bring in those kinds of players. On my bench if they can do what I need them to do then I don't care what they're natural position is. This is why those guys are called roll players, because they play a specific roll that we need.
For the most part starters are starters because they play well and are capable of playing a specific position very well. I know there are some exceptions to the rule ie Lebron, Durant, etc... but you get my drift. Just my opinion though, I dig this thread for the simple fact that it is breeding insightful conversation and posts worth reading. I'll take that over people fighting back and fourth the entire thread any day.
I can't think of any classy or interesting signature at this time, but I've finally posted enough to be allowed to have one so I am exercising that right anyhow.