Whaddaya know, another survey looking to buff a Demolitionist weapon that competes with the RPG-7 for a loadout slot. The Seal Squeal does NOT need a buff to be as good as the RPG-7 is, the RPG-7 needs a nerf to prevent if from being the ONLY choice for dealing with Scrakes. Until that happens no Demolitionist is going to give up that one-shot for a weapon that doesn't.
Also the Crossbow is looking to be tweaked? Just make it able to stun Scrakes starting to block instead of immediately enraging them and confusing everyone because the Scrake was enacting "block" behavior before the player can see the animation for it. It's bad conveyance, pure and simple.