KG has got to be more aggressive .... absolutely. He was extremely tentative last night and reluctant to shoot or attack the hoop, and that hurts us. However, please don't tell me he can't play the low post successfully ... he's done it for most of his career, and it's a big part of why he has the reputation he does.
He's not playing the post game as much as I'd like, but he has no trouble doing it when he decides to. Keep in mind, a huge part of our offense right now is keeping the Lakers from getting rebounds, and getting more offensive rebounds ourself. That means KG not letting Gasol near the boards, which requires him to play farther out from the hoop on a regular basis.
When something seems to be counter to a players abilities, you need to first ask if there's a good reason for it, and there is. Doc wants Perk and PJ to be the low-post presence, and wants KG to be more of a facilitator in the mid-range area, and keep the Laker rebounders off the boards by taking that sweet jumper of his ... he just struggled with it going down last night, and that's going to happen from time-to-time. So yes, almost everything that Doc says concerns me, but not in the way suggested here.