The trust issue is huge. The team needs to trust he'll put the team goals ahead of his own. It's not about just scoring a ton because, at best, he'll only do that once or twice a series anyway. No matter the level, they're still a team and when blokes are in it for themselves, the team suffers whereas guys, even ****s, who understand the social contract they sign when they join a team, raise the performance of those around them.
The ECB has handled this poorly but the bottom line is if England can't trust KP with all the intangibles, he shouldn't be picked. All the perpherial stuff would be far easier to forgive if he was doing the team thing right. England did, at one stage, know how to manage more aggressive personalities, KP had his most productive periods when the team was practically over-flowing with them. I reckon blokes like Vaughan being in charge are the missing piece.