What's wrong with Rick? He's not doing what he's doing out of malice. He's having a mental break because of his feelings of guilt over Lori, Shane, Carl, and everyone. It's only been a week since Lori died. I don't understand disliking the character for it. Lincoln conveys the character's suffering quite genuinely IMO.
The group would have disintegrated by now were it nor for him, and what could he do? Kidnap Daryl and force him back to the group? Rick and Daryl's motivations and the reasons for their behavior don't come across as dictatorial or selfish in any way. Quite the opposite. Yes, Tyrese will be an asset. Rick will see that in time.