I think if you look at the developer's chat from May 4, 2010 (http://www.whatifsports.com/devchat/devchat.asp?chatid=86) there are a couple of questions in there that Seble answered that support the idea that a high low post rating would "hurt" a guy you are trying to develop into, or utilize as a three point shooter.
Since there is no player position penalty, if a shooting gaurd is set to play the pf position will he still play out on the perimeter like a gaurd should or will he be placed in the post like a post player. (vamrbball - Hall of Famer - 2:35 PM)
Generally anyone playing that position would play inside. On defense he would certainly be inside more.
Following up on vamrbball's 2:35 question, a player will naturally take more threes as a SG than he would as a PF, right? If that's the case, wouldn't it still be hard to play a "4-out, 1-in" kind of lineup, as the fourth guard would simply try to play like a power forward? What happens to a center played at the 3 or the 4 - would he start trying to shoot the J? (cornfused - Hall of Famer - 2:43 PM)
The type of shots a player takes will depend on his ratings. A high perimeter player will look to shoot from that range, whether he's a SG or a C.
Based on these I have taken it to mean that each player has a perimeter and low post tendency based on their ratings in those categories. I believe someone like Kane with a 57 LP and a 94 Per is going to have a natural proclivity to take more "low post" shots then someone like Felton. A crude way to look at it (and I believe this is only accurate in theory - meaning please don't put any stock into how I'm actually calculating my ratio I'm just trying to provide an example) is to say all things being equal - a 0 perimeter setting and both playing the same floor position is that Kane might take 62% of his shots from 3 (94/(94+57)) while Felton with an 18 LP and an 87 Per might take 82% (87/(87+18)) from three. These totals are then adjusted by the player's court positioning (i.e. slotted as a PF or C a player will take fewer perimeter shots than one slotted as a PG or SG and vice versa), your perimeter setting, and may also be impacted by some other ratings like speed, athleticism and ball handling.
Can you break down the exact differences between PE and LP in the new engine? More specifically, certain guards with excellent BH but poor PE can score with some efficiency in the current engine with the dribble drive. Will guards now need LP to finish in the lane on a drive, or will LP only apply to post up's, tips, alley-oops, etc? (narcotico - Hall of Famer - 12:29 PM)
It's best to think of Perimeter as "outside scoring" and Low Post as "inside scoring". I know the term "Low Post" isn't the best descriptor for what that rating will mean. Scoring, both inside and outside, is impacted by Ball Handling, Speed, and Athleticism.