this is probably a side issue to the main topic but commando is fine how it is. if anything it should somehow do less damage to the bigguns at all difficulties to discourage bad habits forming at beginner and normal. and the tab scoreboard should stop listing kill counts. commando is where the killcounts are and those who treat the game as a competition will probably gravitate to the class.
Bad players will be bad player.
I play on Normal an i have seen people totally lacking teamwork spirit, and some just go camp at the spawn points, getting surrounded and dying, and when i tell them to go camp at a "safe" place, they react like: "Tis is not CoD you moron! Camping is for stupid."
In that case, after i have tried to explain them that this is a teamwork game, i usually prove my point.
In my opinion, the Commando and all the other classes need realistic weapons.
In terms of damage, this means 65 damage fro SCAR and 70 for FAL, while the Bullpup and the M4 should do 35.
Yes, you are not supposed to engage the Big ZEDs, but sometimes you have to assist the team or draw a ZEDs attention before it mauls your teammates to death.
Now, about those who treat the game as competition, many do it to level their perks, and others are just used to see games this way. Even the golden guys.