First of all, I think there's no 'perfect' player for a position, to give you an easy example, a Power Foward, who's less strong inside, but strong inside, can have a bigger role then a decent outside players who's extremely dominant inside. 
But my ultimate PG would be a player with good passing, ballhandling, jump range, a decent jump shot but most importantly, amazing outside defence and good free throws, since the ball is going to be in his hands when the game is close. It doesn't hurt if a point gaurd has got a bit of inside scoring and good driving. 
For SG's, I got the same requirements, defense is important, because the old quote is as much true as it has always been... Defense wins games! and ofcourse jump shot, jump range are primary aspects, but ballhandling and passing can not be overlooked! Because a SG who can play PG at times, can always be useful (If the PG's have trouble with their game shape!)
Further, a good SF to me is a guy, who is as good inside as he is outside! Both inside and outside defense are priorities! Furthermore a decent jump shot and inside scoring are required... Ballhandling, passing and rebounding should be above level 6-7 and driving should be 7-8.
For PF's, I allready made a certain point, they also need to be able to contribute when the team is playing Motion or Run 'n Gun! Because that can create missmatches among the opposing team... They should also be strong inside, defense offense and rebounding... But I think an aspect which is often forgotten is the fact that they should also have a little outside defense, so they can play SF when you're playing Look Inside, but still need to have a guy who can defend the opposing 3. They should be well-rounded players. This is not always the case in U21 teams, since the first years of training are focussed inside. But that's something I really aim to succeed in my time as an U21 coach, I want to have a 'standard' how for example PF's can be or should be built!
And finally, the C's... Centers should be monstrous inside, really having good rebounding and defensive skills, inside scoring is important, but less important than the previous aspects. They should also have a little ballhandling and passing, since turnovers can really destroy a game!
Ofcourse, this is my vision of players and those closest to my expectations, wil have a spot on the roster. 
I want to close this argument, by stating that defense is the most important aspect to me, because my experience in the game proved me that defense wins championships. So I'd rather have a great defense and a decent offense then having a good defense and a good offense! 
And ofcourse, we can't  force managers, to train the players the way we want them to... But we can help those, who ask themselves how to build their training schedule and so on...
Last edited by Laur3ns at 5/19/2012 1:28:49 PM