Going with the theme everyone else is saying, there are way too many factors that even if I write down my basic rules, even I don't follow them completely.
But to give ranges, assuming the player has 60+ spd and 50+ BH, so even start to base it on perimeter alone. Then Perimeter ratings would go like this...
Around 50 and below I put at -2, 50-70 -1, 70-80 0, 80+ +1. I would only put a player at +2 if he had 95+ perimeter and great SPD, BH, and couldn't do anything else. Because if he has any LP skills or can shoot FT's, you don't want him so far away from the basket.
Of course there are so many factors. If the SPD and BH go up I'll up the frequency with lower PER. Also, if this player is my only shooter, I'll let him shoot more 3's then if I have multiple shooters.
I wanted to throw these numbers out there and see if people say my numbers are too strict or loose.
The one other thing I'll say is that I move my disro during the season based on shooting percentages. So if a player is shooting over 50% on the season I'll give him the ball more. So same with 3 PT%. If the player is shooting 40% at -1, I'll up his 3 pt distro.