I think that Marine melee options should be changed to include some of these suggestions.
First off, Antibio kits should work on melee weapons. Melee weapons could be updated to include a small critical hit chance/ or boost damage a bit, or include limb removal chance against opponents. I mean it doesn't make sense that the throwing knife throws 55 damage, and the machete does 40 damage. The entrenching tool should be upgraded to have higher melee damage, maybe comparable to machete, maybe a little less. Melee weapons (besides knives) should be able to be wielded by two hands, adding more damage or something.
I want to be able to more confidently run into Xenos with a machete.