I thought Brock was too conservative against Herring. But I also recognize it's tough to finish a tough guy who's determined to turtle.
I don't GSP has been too conservative lately, though. He rocked Fitch repeatedly in their fight, but Fitch hung on. Against Alves, GSP rocked him once and nearly finished him, and another time he finished a round with total back control looking for a rear naked choke.
He's been looking to finish guys. He's been striking, exchanging, he's been constantly passing guard and striking on the ground, and he's been going for submissions. And he's been incredibly effective. But a couple guys managed to weather some serious storms, so GSP had to settle for merely beating them up.
Look, GSP is currently fighting in the most stacked division in any organization right now. It'd be nice for him if he had some guys like Tsuyoshi Kohsaka or Kevin Randleman or Zulizinho or Yuji Nagata to rack up easy finishes on. But he doesn't. So this idea that he has to be finishing everyone he fights is just nuts.
Don't get me wrong, you don't have to find GSP entertaining. It's totally fine if you don't. But that's on you, not GSP.