Even though Trevor is an typical asshole brute, i honestly don't hate him. I'm sad about situation with Karina (and i hope we still can turn her into decent girl), but for me, he's fairly harmless stupid guy. MC just need to dominate his "bull" personality by beating him up few times (or maybe sleeping with his mom). He's a simple kind. I think having Trevor as resource of alcohol, information and tons of other stuff through the game is not that bad. But who knows what Vilelab's plans is. Maybe the aunt really gonna destroy his ass.