Hey there Grunt! You're right about the fact that some of the Sound FX sound a bit dull as is. As with most SFX packs, the user is going to need to do a bit of sound design to match everything with their scene. For the trailer, I rarely used just one sound for a shot. I find that combining different sounds on top of each other usually result in a "richer" final product. Let's say you're adding an explosion SFX. Combining the Dirt Explosion with another one of the explosions (and possibly upping the bass) would result in a fuller sounding SFX as opposed to simply dragging one on top. I also mess with the Equalizer effect in my NLE quite a bit. Sometimes upping the treble really makes the SFX work for my shot, sometimes upping the bass is what gets it done. The reason for that is different microphones pick up sound differently. So if my movie source audio has a lot of bass, then matching the SFX accordingly is what's going to make it work with my scene. Also, wa tch this whole video by Freddiew if you haven't: https://www.youtube.com/watch?v=ZPRTrrbdPew It offers some great tips on Action Movie Sound Design. Hope you found this post helpful!
Thank you for replying, And yes i have seen the Freddiew video! Thx