Enhance weapon effects? Yes.
Deagle? Well, I guess since you're giving it to NPCs, yeah, okay.
Race X? Try to either keep it to a minimum, only have it in near the end of the BMI, or have the player wipe them out.
Displacer? There are two, or did G-man just dump it where he didn't think anyone would find it?
Just my two cents. Also, do you have concept art for the Xenfly? Someone here might be able to model it.
EDIT: Do you guys already have material-based sprite gibs for weapons?
Eg. You shoot wood and small splinter sprites come out, or shoot metal and it sparks