Oh boy... Archie seems to have covered most of the arguments posted here (although I would suggest toning it down a bit with the new forum rules; we don't want to see anyone get banned over this
); but something did catch my eye in this wall of text.
Nak, you had several hypothetical situations in which the Commando would have to deal with a siren/a group of sirens hidden behind a wall of trash. There should be no reason why the Commando could not deal with both the trash and the siren(s). Let's say it is the typical pub loadout (AK+Scar) on 6 -man HoE. If both weapons were fully loaded, the Commando could quickly dispatch the trash around the sirens with the AK (37 rounds, that's 37 decaps, and ~ 15 kills if you want to finish them off), then switch to the Scar to quickly kill the siren(s). Now when are you going to get over 15 things in front of the Siren(s) if you are a Commando? Not very often. Why? Because you would be steadily killing them. I'm not sure about any of you, but when I play Commando it is not often that I have more than 15 things alive coming at me at once. Either way, a semi competent Commando could deal with the situation easily.
The next scenario was if there was a Siren behind a FP. Now, I'm just going to assume that your team mates are smart enough to fire one to two shots into the FP to get it's attention first to kill it. That leaves it up to you to shoot around the FP and kill the Siren. Sound does not attract the specimens. Shooting them, when they aren't locked onto someone already does. So unless you are hitting the FP, there should be no reason for it to suddenly turn around and go for you.
I have said it before, and I will say it again. Commando is NOT underpowered; nor are its weapons. You just have to learn how to play it effectively. Just because you can't solo something, or kill a big thing as fast as something else, doesn't mean that it is underpowered. Yes, Firebug can set the whole group on fire, but you will also set the FP on fire, or catch a Scrake, and suddenly the whole team will be against you. Firebug is good, yes (very good in fact), but Commando is preferred in a lot of situations.
Also, I have yet to ever see a Support do a better job of trash control than a Commando. Sure, they CAN do it, but it is no way any more effective, or useful. And Penetration is a terrible idea for Commando weapons, and for my point I will use your example:
Nak, you had several hypothetical situations in which the Commando would have to deal with a siren/a group of sirens hidden behind a wall of trash. There should be no reason why the Commando could not deal with both the trash and the siren(s). Let's say it is the typical pub loadout (AK+Scar) on 6 -man HoE. If both weapons were fully loaded, the Commando could quickly dispatch the trash around the sirens with the AK (37 rounds, that's 37 decaps, and ~ 15 kills if you want to finish them off), then switch to the Scar to quickly kill the siren(s). Now when are you going to get over 15 things in front of the Siren(s) if you are a Commando? Not very often. Why? Because you would be steadily killing them. I'm not sure about any of you, but when I play Commando it is not often that I have more than 15 things alive coming at me at once. Either way, a semi competent Commando could deal with the situation easily.
The next scenario was if there was a Siren behind a FP. Now, I'm just going to assume that your team mates are smart enough to fire one to two shots into the FP to get it's attention first to kill it. That leaves it up to you to shoot around the FP and kill the Siren. Sound does not attract the specimens. Shooting them, when they aren't locked onto someone already does. So unless you are hitting the FP, there should be no reason for it to suddenly turn around and go for you.
I have said it before, and I will say it again. Commando is NOT underpowered; nor are its weapons. You just have to learn how to play it effectively. Just because you can't solo something, or kill a big thing as fast as something else, doesn't mean that it is underpowered. Yes, Firebug can set the whole group on fire, but you will also set the FP on fire, or catch a Scrake, and suddenly the whole team will be against you. Firebug is good, yes (very good in fact), but Commando is preferred in a lot of situations.
Also, I have yet to ever see a Support do a better job of trash control than a Commando. Sure, they CAN do it, but it is no way any more effective, or useful. And Penetration is a terrible idea for Commando weapons, and for my point I will use your example:
Congratulations, you may have just drawn agro on that Scrake. Now imagine if you have an autobow Sharp on your team. He stuns the Scrake, but waits for the Scrake to come unstunned and charge towards him so he can land the second. Instead, the Scrake turns to you and starts sawing you in half. Because the Scrake is on it's side, the Sharp misses the shot due to derpy hitbox. Here you are wondering wtf is going on, and start spamming at the Scrake, letting the trash get closer. While everyone finishes off the Scrake, the trash has got so close that you get pushed back, and this could either lead to a wipe or a very hard fought for victory. Either way, the fault of that would fall onto the Commando and his penetrating weapon, for drawing the agro on the Scrake (unintentionally).In my example; you pop the clot infront of Scrake with M4 and only deal Scrake 41 damage considering you scored a headshot.