Kujay, there are no dumb questions, only dumb players.
1. My first thought was that we should improve more significantly for a guy like that. However, when thinking about it a little more, I'm not so sure. A 7 we guy is basically a completely unmotivated lazy ***, and for many (most, imho) of those guys are simply going to be lazy and unmotivated forever.
The one caveat I'd offer is that I think it would be great and make a lot of sense for we to improve differently for different players. The current linear progression is a remnant of the pre-potential days, and not only don't I think it makes sense in the potential era, I don't think it makes sense even on its face.
Some guys -- whether it's a response to starting, PT, different environment, increased maturity, whatever -- will have a switch flip and really start to get together, and others will stay pretty steady as far as their motivation goes. And I think we improvement should reflect that.
2. And no, we doesn't impact on-court performance. There are tons of high we guys who underacheive as well.