I think the big wildlife are just right. They do enough damage to make a stage one monster, or a monster with no armor, not want to mess with them, and create a bad spot for hunters at the same time. That being said, with all four hunters together they’re nothing, and when a monster has armor they can take them down fine without worrying too much. It’s all situational, and can be either good or bad.
As for the monster and big wildlife being in the same dome, as hunters you should just focus down the big one first, or avoid it all together, and as the monster you should run until the hunters are messed up by it, and then engage, or use the time they fight that to wait the dome out. Almost never should you try and have the big wildlife ‘focus’ the monster, because they are not controllable like that. It’s very hard to do so, and the four teammates will do more damage than it anyhow.
That’s just my experiences with them though