Here is my take FWIW:
- Work ethic does not impact the game per se, although it has been previously indicated that a kid with higher work ethic may work harder in games which does potentially impact the outcome. For example, of two kids with a 50 defense rating, the kid with 80 WE *should* be a better defender (how much better? who knows.) than a kid with a 30 WE all else being equal. Similar relationship on rebounding and other aspects. So in that sense there is supposed to be some impact on the game, but it is a supplementary impact to other ratings (ie: I would not give WE much weight in deciding starters and distro, but it *could* be a tie-breaker of sorts).
- Higher WE kids do improve faster and / or reach their potential faster.
- Most coaches typically avoid low WE players, as they will not improve much, especially if in the 10-15 range or lower. HOWEVER, I personally will take a low WE kid if his ratings are acceptable to me as-is, especially if he will get a lot of starts and/or PT. No, he won't improve like his higher WE peers, but if he is ahead of them to start he may still be a better recruit. Sometimes you can find a real stud with abyssmal WE who no one wants that can plug a hole or maybe command a start right away--in those instances I will consider and sometimes sign a low WE kid (see my Brandeis team for a pair of JR Centers; at end of 1st season with Dewitt starting he was an 11 WE (up from 9 as a new recruit) and 471 overall, Smith was a 33 WE and a 490 overall. You can see their progression...Dewitt could command the start right away and helped plug a gap, but Smith has now surpassed him although Dewitt still starts. Dewitt's WE has not gone up a lot with starts but it is climbing and he makes slow improvement and does have use).
Bottom line, if you can take a low WE kid and use him as he is right now and can accept him for what he is if he doesn't improve at all (worst case), then I'd consider signing him. My take only for what it is worth.